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  1. FL2VA/processor/video_preprocessor_config.json +21 -0
  2. FL2VA/processor/vocab.json +0 -0
  3. FL2VA/text_encoder/chat_template.json +3 -0
  4. FL2VA/text_encoder/config.json +62 -0
  5. FL2VA/text_encoder/merges.txt +0 -0
  6. FL2VA/text_encoder/model.safetensors.index.json +1065 -0
  7. FL2VA/text_encoder/preprocessor_config.json +21 -0
  8. FL2VA/text_encoder/tokenizer.json +0 -0
  9. FL2VA/text_encoder/tokenizer_config.json +246 -0
  10. FL2VA/text_encoder/video_preprocessor_config.json +21 -0
  11. FL2VA/text_encoder/vocab.json +0 -0
  12. FL2VA/tokenizer/merges.txt +0 -0
  13. FL2VA/tokenizer/tokenizer.json +0 -0
  14. FL2VA/tokenizer/tokenizer_config.json +246 -0
  15. FL2VA/tokenizer/vocab.json +0 -0
  16. FL2VA/transformer/config.json +27 -0
  17. FL2VA/transformer/model-00013-of-00013.safetensors +3 -0
  18. FL2VA/transformer/model.safetensors.index.json +542 -0
  19. FL2VA/video_vae/attention.py +163 -0
  20. FL2VA/video_vae/base_module.py +282 -0
  21. FL2VA/video_vae/config.json +74 -0
  22. FL2VA/video_vae/conv.py +159 -0
  23. FL2VA/video_vae/flash.py +178 -0
  24. FL2VA/video_vae/func.py +163 -0
  25. FL2VA/video_vae/klvae.py +1258 -0
  26. FL2VA/video_vae/minimax_h3_video_vae.py +122 -0
  27. FL2VA/video_vae/norm.py +357 -0
  28. FL2VA/video_vae/normalize.py +39 -0
  29. FL2VA/video_vae/parallel.py +418 -0
  30. FL2VA/video_vae/source/config.json +71 -0
  31. FL2VA/video_vae/source/model.safetensors +3 -0
  32. FL2VA/video_vae/utils.py +18 -0
  33. FL2VA/video_vae/vae_cnn.py +304 -0
  34. FL2VA/video_vae/vae_module.py +53 -0
  35. FL2VA/video_vae/vae_processor.py +234 -0
  36. FL2VA/video_vae/vae_vit.py +380 -0
  37. Ref2VA/audio_vae/model.safetensors +3 -0
  38. assets/fl2va.mp4 +3 -0
  39. assets/full-arch.png +3 -0
  40. assets/h3_direct_2k.mp4 +3 -0
  41. assets/h3_direct_768p.mp4 +3 -0
  42. assets/i2va.mp4 +3 -0
  43. assets/i2va_2k.mp4 +3 -0
  44. assets/i2va_direct_2k.mp4 +3 -0
  45. assets/i2va_direct_768p.mp4 +3 -0
  46. assets/minimax-h3.png +3 -0
  47. assets/overview.png +3 -0
  48. assets/r2va.mp4 +3 -0
  49. assets/r2va_2k.mp4 +3 -0
  50. assets/r2va_direct_2k.mp4 +3 -0
FL2VA/processor/video_preprocessor_config.json ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ {
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+ "size": {
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+ "longest_edge": 25165824,
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+ "shortest_edge": 4096
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+ },
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+ "patch_size": 16,
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+ "temporal_patch_size": 2,
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+ "merge_size": 2,
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+ "image_mean": [
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+ 0.5,
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+ 0.5,
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+ 0.5
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+ ],
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+ "image_std": [
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+ 0.5,
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+ 0.5,
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+ 0.5
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+ ],
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+ "processor_class": "Qwen3VLProcessor",
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+ "video_processor_type": "Qwen3VLVideoProcessor"
21
+ }
FL2VA/processor/vocab.json ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/text_encoder/chat_template.json ADDED
@@ -0,0 +1,3 @@
 
 
 
 
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+ {
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+ "chat_template": "{%- if tools %}\n {{- '<|im_start|>system\\n' }}\n {%- if messages[0].role == 'system' %}\n {%- if messages[0].content is string %}\n {{- messages[0].content }}\n {%- else %}\n {%- for content in messages[0].content %}\n {%- if 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '\\n\\n' }}\n {%- endif %}\n {{- \"# Tools\\n\\nYou may call one or more functions to assist with the user query.\\n\\nYou are provided with function signatures within <tools></tools> XML tags:\\n<tools>\" }}\n {%- for tool in tools %}\n {{- \"\\n\" }}\n {{- tool | tojson }}\n {%- endfor %}\n {{- \"\\n</tools>\\n\\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\\n<tool_call>\\n{\\\"name\\\": <function-name>, \\\"arguments\\\": <args-json-object>}\\n</tool_call><|im_end|>\\n\" }}\n{%- else %}\n {%- if messages[0].role == 'system' %}\n {{- '<|im_start|>system\\n' }}\n {%- if messages[0].content is string %}\n {{- messages[0].content }}\n {%- else %}\n {%- for content in messages[0].content %}\n {%- if 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- endif %}\n{%- endif %}\n{%- set image_count = namespace(value=0) %}\n{%- set video_count = namespace(value=0) %}\n{%- for message in messages %}\n {%- if message.role == \"user\" %}\n {{- '<|im_start|>' + message.role + '\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content in message.content %}\n {%- if content.type == 'image' or 'image' in content or 'image_url' in content %}\n {%- set image_count.value = image_count.value + 1 %}\n {%- if add_vision_id %}Picture {{ image_count.value }}: {% endif -%}\n <|vision_start|><|image_pad|><|vision_end|>\n {%- elif content.type == 'video' or 'video' in content %}\n {%- set video_count.value = video_count.value + 1 %}\n {%- if add_vision_id %}Video {{ video_count.value }}: {% endif -%}\n <|vision_start|><|video_pad|><|vision_end|>\n {%- elif 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- elif message.role == \"assistant\" %}\n {{- '<|im_start|>' + message.role + '\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content_item in message.content %}\n {%- if 'text' in content_item %}\n {{- content_item.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {%- if message.tool_calls %}\n {%- for tool_call in message.tool_calls %}\n {%- if (loop.first and message.content) or (not loop.first) %}\n {{- '\\n' }}\n {%- endif %}\n {%- if tool_call.function %}\n {%- set tool_call = tool_call.function %}\n {%- endif %}\n {{- '<tool_call>\\n{\"name\": \"' }}\n {{- tool_call.name }}\n {{- '\", \"arguments\": ' }}\n {%- if tool_call.arguments is string %}\n {{- tool_call.arguments }}\n {%- else %}\n {{- tool_call.arguments | tojson }}\n {%- endif %}\n {{- '}\\n</tool_call>' }}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- elif message.role == \"tool\" %}\n {%- if loop.first or (messages[loop.index0 - 1].role != \"tool\") %}\n {{- '<|im_start|>user' }}\n {%- endif %}\n {{- '\\n<tool_response>\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content in message.content %}\n {%- if content.type == 'image' or 'image' in content or 'image_url' in content %}\n {%- set image_count.value = image_count.value + 1 %}\n {%- if add_vision_id %}Picture {{ image_count.value }}: {% endif -%}\n <|vision_start|><|image_pad|><|vision_end|>\n {%- elif content.type == 'video' or 'video' in content %}\n {%- set video_count.value = video_count.value + 1 %}\n {%- if add_vision_id %}Video {{ video_count.value }}: {% endif -%}\n <|vision_start|><|video_pad|><|vision_end|>\n {%- elif 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '\\n</tool_response>' }}\n {%- if loop.last or (messages[loop.index0 + 1].role != \"tool\") %}\n {{- '<|im_end|>\\n' }}\n {%- endif %}\n {%- endif %}\n{%- endfor %}\n{%- if add_generation_prompt %}\n {{- '<|im_start|>assistant\\n' }}\n{%- endif %}\n"
3
+ }
FL2VA/text_encoder/config.json ADDED
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+ {
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+ "architectures": [
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+ "Qwen3VLForConditionalGeneration"
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+ ],
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+ "image_token_id": 151655,
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+ "model_type": "qwen3_vl",
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+ "text_config": {
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+ "attention_bias": false,
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+ "attention_dropout": 0.0,
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+ "bos_token_id": 151643,
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+ "dtype": "bfloat16",
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+ "eos_token_id": 151645,
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+ "head_dim": 128,
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+ "hidden_act": "silu",
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+ "hidden_size": 5120,
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+ "initializer_range": 0.02,
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+ "intermediate_size": 25600,
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+ "max_position_embeddings": 262144,
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+ "model_type": "qwen3_vl_text",
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+ "num_attention_heads": 64,
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+ "num_hidden_layers": 64,
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+ "num_key_value_heads": 8,
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+ "rms_norm_eps": 1e-06,
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+ "rope_scaling": {
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+ "mrope_interleaved": true,
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+ "mrope_section": [
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+ 24,
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+ 20,
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+ 20
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+ ],
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+ "rope_type": "default"
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+ },
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+ "rope_theta": 5000000,
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+ "use_cache": true,
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+ "vocab_size": 151936
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+ },
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+ "tie_word_embeddings": false,
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+ "transformers_version": "4.57.0.dev0",
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+ "video_token_id": 151656,
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+ "vision_config": {
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+ "deepstack_visual_indexes": [
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+ 8,
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+ 16,
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+ 24
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+ ],
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+ "depth": 27,
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+ "hidden_act": "gelu_pytorch_tanh",
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+ "hidden_size": 1152,
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+ "in_channels": 3,
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+ "initializer_range": 0.02,
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+ "intermediate_size": 4304,
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+ "model_type": "qwen3_vl",
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+ "num_heads": 16,
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+ "num_position_embeddings": 2304,
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+ "out_hidden_size": 5120,
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+ "patch_size": 16,
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+ "spatial_merge_size": 2,
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+ "temporal_patch_size": 2
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+ },
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+ "vision_end_token_id": 151653,
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+ "vision_start_token_id": 151652
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+ }
FL2VA/text_encoder/merges.txt ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/text_encoder/model.safetensors.index.json ADDED
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+ }
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+ }
FL2VA/text_encoder/preprocessor_config.json ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ {
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+ "size": {
3
+ "longest_edge": 16777216,
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+ "shortest_edge": 65536
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+ },
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+ "patch_size": 16,
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+ "temporal_patch_size": 2,
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+ "merge_size": 2,
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+ "image_mean": [
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+ 0.5,
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+ 0.5,
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+ 0.5
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+ ],
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+ "image_std": [
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+ 0.5,
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+ 0.5,
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+ 0.5
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+ ],
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+ "processor_class": "Qwen3VLProcessor",
20
+ "image_processor_type": "Qwen2VLImageProcessorFast"
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+ }
FL2VA/text_encoder/tokenizer.json ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/text_encoder/tokenizer_config.json ADDED
@@ -0,0 +1,246 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
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+ "add_bos_token": false,
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+ "add_prefix_space": false,
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+ "added_tokens_decoder": {
5
+ "151643": {
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+ "content": "<|endoftext|>",
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+ "lstrip": false,
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+ "rstrip": false,
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+ "special": true
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+ },
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+ "151644": {
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+ "content": "<|im_start|>",
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+ "special": true
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+ },
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+ "151645": {
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+ "content": "<|im_end|>",
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+ },
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+ "151646": {
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+ "special": true
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+ },
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+ "151648": {
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+ "151650": {
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+ },
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+ "151651": {
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+ },
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+ "special": true
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+ },
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+ "content": "<|image_pad|>",
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106
+ "single_word": false,
107
+ "special": true
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+ },
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+ "151656": {
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+ "content": "<|video_pad|>",
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+ "lstrip": false,
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+ "rstrip": false,
114
+ "single_word": false,
115
+ "special": true
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+ },
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+ "151657": {
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+ "content": "<tool_call>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": false
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+ },
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+ "151658": {
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+ "content": "</tool_call>",
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129
+ "rstrip": false,
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+ "single_word": false,
131
+ "special": false
132
+ },
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+ "151659": {
134
+ "content": "<|fim_prefix|>",
135
+ "lstrip": false,
136
+ "normalized": false,
137
+ "rstrip": false,
138
+ "single_word": false,
139
+ "special": false
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+ },
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+ "151660": {
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+ "content": "<|fim_middle|>",
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+ "lstrip": false,
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145
+ "rstrip": false,
146
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147
+ "special": false
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+ },
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+ "content": "<|fim_suffix|>",
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+ "normalized": false,
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154
+ "single_word": false,
155
+ "special": false
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+ },
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+ "151662": {
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+ "content": "<|fim_pad|>",
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": false
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+ },
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+ "151663": {
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+ "content": "<|repo_name|>",
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+ "special": false
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+ },
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+ "content": "<|file_sep|>",
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+ "single_word": false,
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+ "special": false
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+ },
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+ "151665": {
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+ "content": "<tool_response>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
186
+ "single_word": false,
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+ "special": false
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+ },
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+ "151666": {
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+ "content": "</tool_response>",
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+ "lstrip": false,
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+ "single_word": false,
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+ "special": false
196
+ },
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+ "151667": {
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+ "content": "<think>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
202
+ "single_word": false,
203
+ "special": false
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+ },
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+ "151668": {
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+ "content": "</think>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
210
+ "single_word": false,
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+ "special": false
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+ }
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+ },
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+ "additional_special_tokens": [
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+ "<|im_start|>",
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+ "<|im_end|>",
217
+ "<|object_ref_start|>",
218
+ "<|object_ref_end|>",
219
+ "<|box_start|>",
220
+ "<|box_end|>",
221
+ "<|quad_start|>",
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+ "<|quad_end|>",
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+ "<|vision_start|>",
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+ "<|vision_end|>",
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+ "<|vision_pad|>",
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+ "<|image_pad|>",
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+ "<|video_pad|>",
228
+ "<d>",
229
+ "</d>",
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+ "<|cutoff|>",
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+ "<|lyrics_start|>",
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+ "<|lyrics_end|>",
233
+ "<|caption_start|>",
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+ "<|caption_end|>"
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+ ],
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+ "bos_token": null,
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+ "chat_template": "{%- if tools %}\n {{- '<|im_start|>system\\n' }}\n {%- if messages[0].role == 'system' %}\n {%- if messages[0].content is string %}\n {{- messages[0].content }}\n {%- else %}\n {%- for content in messages[0].content %}\n {%- if 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '\\n\\n' }}\n {%- endif %}\n {{- \"# Tools\\n\\nYou may call one or more functions to assist with the user query.\\n\\nYou are provided with function signatures within <tools></tools> XML tags:\\n<tools>\" }}\n {%- for tool in tools %}\n {{- \"\\n\" }}\n {{- tool | tojson }}\n {%- endfor %}\n {{- \"\\n</tools>\\n\\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\\n<tool_call>\\n{\\\"name\\\": <function-name>, \\\"arguments\\\": <args-json-object>}\\n</tool_call><|im_end|>\\n\" }}\n{%- else %}\n {%- if messages[0].role == 'system' %}\n {{- '<|im_start|>system\\n' }}\n {%- if messages[0].content is string %}\n {{- messages[0].content }}\n {%- else %}\n {%- for content in messages[0].content %}\n {%- if 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- endif %}\n{%- endif %}\n{%- set image_count = namespace(value=0) %}\n{%- set video_count = namespace(value=0) %}\n{%- for message in messages %}\n {%- if message.role == \"user\" %}\n {{- '<|im_start|>' + message.role + '\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content in message.content %}\n {%- if content.type == 'image' or 'image' in content or 'image_url' in content %}\n {%- set image_count.value = image_count.value + 1 %}\n {%- if add_vision_id %}Picture {{ image_count.value }}: {% endif -%}\n <|vision_start|><|image_pad|><|vision_end|>\n {%- elif content.type == 'video' or 'video' in content %}\n {%- set video_count.value = video_count.value + 1 %}\n {%- if add_vision_id %}Video {{ video_count.value }}: {% endif -%}\n <|vision_start|><|video_pad|><|vision_end|>\n {%- elif 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- elif message.role == \"assistant\" %}\n {{- '<|im_start|>' + message.role + '\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content_item in message.content %}\n {%- if 'text' in content_item %}\n {{- content_item.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {%- if message.tool_calls %}\n {%- for tool_call in message.tool_calls %}\n {%- if (loop.first and message.content) or (not loop.first) %}\n {{- '\\n' }}\n {%- endif %}\n {%- if tool_call.function %}\n {%- set tool_call = tool_call.function %}\n {%- endif %}\n {{- '<tool_call>\\n{\"name\": \"' }}\n {{- tool_call.name }}\n {{- '\", \"arguments\": ' }}\n {%- if tool_call.arguments is string %}\n {{- tool_call.arguments }}\n {%- else %}\n {{- tool_call.arguments | tojson }}\n {%- endif %}\n {{- '}\\n</tool_call>' }}\n {%- endfor %}\n {%- endif %}\n {{- '<|im_end|>\\n' }}\n {%- elif message.role == \"tool\" %}\n {%- if loop.first or (messages[loop.index0 - 1].role != \"tool\") %}\n {{- '<|im_start|>user' }}\n {%- endif %}\n {{- '\\n<tool_response>\\n' }}\n {%- if message.content is string %}\n {{- message.content }}\n {%- else %}\n {%- for content in message.content %}\n {%- if content.type == 'image' or 'image' in content or 'image_url' in content %}\n {%- set image_count.value = image_count.value + 1 %}\n {%- if add_vision_id %}Picture {{ image_count.value }}: {% endif -%}\n <|vision_start|><|image_pad|><|vision_end|>\n {%- elif content.type == 'video' or 'video' in content %}\n {%- set video_count.value = video_count.value + 1 %}\n {%- if add_vision_id %}Video {{ video_count.value }}: {% endif -%}\n <|vision_start|><|video_pad|><|vision_end|>\n {%- elif 'text' in content %}\n {{- content.text }}\n {%- endif %}\n {%- endfor %}\n {%- endif %}\n {{- '\\n</tool_response>' }}\n {%- if loop.last or (messages[loop.index0 + 1].role != \"tool\") %}\n {{- '<|im_end|>\\n' }}\n {%- endif %}\n {%- endif %}\n{%- endfor %}\n{%- if add_generation_prompt %}\n {{- '<|im_start|>assistant\\n' }}\n{%- endif %}\n",
238
+ "clean_up_tokenization_spaces": false,
239
+ "eos_token": "<|im_end|>",
240
+ "errors": "replace",
241
+ "model_max_length": 262144,
242
+ "pad_token": "<|endoftext|>",
243
+ "split_special_tokens": false,
244
+ "tokenizer_class": "Qwen2Tokenizer",
245
+ "unk_token": null
246
+ }
FL2VA/text_encoder/video_preprocessor_config.json ADDED
@@ -0,0 +1,21 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "size": {
3
+ "longest_edge": 25165824,
4
+ "shortest_edge": 4096
5
+ },
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+ "patch_size": 16,
7
+ "temporal_patch_size": 2,
8
+ "merge_size": 2,
9
+ "image_mean": [
10
+ 0.5,
11
+ 0.5,
12
+ 0.5
13
+ ],
14
+ "image_std": [
15
+ 0.5,
16
+ 0.5,
17
+ 0.5
18
+ ],
19
+ "processor_class": "Qwen3VLProcessor",
20
+ "video_processor_type": "Qwen3VLVideoProcessor"
21
+ }
FL2VA/text_encoder/vocab.json ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/tokenizer/merges.txt ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/tokenizer/tokenizer.json ADDED
The diff for this file is too large to render. See raw diff
 
FL2VA/tokenizer/tokenizer_config.json ADDED
@@ -0,0 +1,246 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
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+ "add_bos_token": false,
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+ "add_prefix_space": false,
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+ "added_tokens_decoder": {
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+ "151643": {
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+ "content": "<|endoftext|>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": true
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+ },
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+ "151644": {
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+ "content": "<|im_start|>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": true
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+ },
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+ "151645": {
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+ "content": "<|im_end|>",
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": true
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+ },
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+ "151646": {
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+ "content": "<|object_ref_start|>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
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+ "single_word": false,
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+ "special": true
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+ },
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+ "151647": {
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+ "content": "<|object_ref_end|>",
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+ "lstrip": false,
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+ "normalized": false,
41
+ "rstrip": false,
42
+ "single_word": false,
43
+ "special": true
44
+ },
45
+ "151648": {
46
+ "content": "<|box_start|>",
47
+ "lstrip": false,
48
+ "normalized": false,
49
+ "rstrip": false,
50
+ "single_word": false,
51
+ "special": true
52
+ },
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+ "151649": {
54
+ "content": "<|box_end|>",
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+ "lstrip": false,
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+ "normalized": false,
57
+ "rstrip": false,
58
+ "single_word": false,
59
+ "special": true
60
+ },
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+ "151650": {
62
+ "content": "<|quad_start|>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
66
+ "single_word": false,
67
+ "special": true
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+ },
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+ "151651": {
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+ "content": "<|quad_end|>",
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+ "lstrip": false,
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+ "rstrip": false,
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+ "special": true
76
+ },
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+ "151652": {
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+ "content": "<|vision_start|>",
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+ "lstrip": false,
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+ "normalized": false,
81
+ "rstrip": false,
82
+ "single_word": false,
83
+ "special": true
84
+ },
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+ "151653": {
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+ "content": "<|vision_end|>",
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+ "lstrip": false,
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+ "normalized": false,
89
+ "rstrip": false,
90
+ "single_word": false,
91
+ "special": true
92
+ },
93
+ "151654": {
94
+ "content": "<|vision_pad|>",
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+ "lstrip": false,
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+ "normalized": false,
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+ "rstrip": false,
98
+ "single_word": false,
99
+ "special": true
100
+ },
101
+ "151655": {
102
+ "content": "<|image_pad|>",
103
+ "lstrip": false,
104
+ "normalized": false,
105
+ "rstrip": false,
106
+ "single_word": false,
107
+ "special": true
108
+ },
109
+ "151656": {
110
+ "content": "<|video_pad|>",
111
+ "lstrip": false,
112
+ "normalized": false,
113
+ "rstrip": false,
114
+ "single_word": false,
115
+ "special": true
116
+ },
117
+ "151657": {
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+ "content": "<tool_call>",
119
+ "lstrip": false,
120
+ "normalized": false,
121
+ "rstrip": false,
122
+ "single_word": false,
123
+ "special": false
124
+ },
125
+ "151658": {
126
+ "content": "</tool_call>",
127
+ "lstrip": false,
128
+ "normalized": false,
129
+ "rstrip": false,
130
+ "single_word": false,
131
+ "special": false
132
+ },
133
+ "151659": {
134
+ "content": "<|fim_prefix|>",
135
+ "lstrip": false,
136
+ "normalized": false,
137
+ "rstrip": false,
138
+ "single_word": false,
139
+ "special": false
140
+ },
141
+ "151660": {
142
+ "content": "<|fim_middle|>",
143
+ "lstrip": false,
144
+ "normalized": false,
145
+ "rstrip": false,
146
+ "single_word": false,
147
+ "special": false
148
+ },
149
+ "151661": {
150
+ "content": "<|fim_suffix|>",
151
+ "lstrip": false,
152
+ "normalized": false,
153
+ "rstrip": false,
154
+ "single_word": false,
155
+ "special": false
156
+ },
157
+ "151662": {
158
+ "content": "<|fim_pad|>",
159
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+ "condition_proj.weight": "model-00001-of-00013.safetensors",
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+ "final_layer.adaln_proj.linear.weight": "model-00013-of-00013.safetensors",
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+ "final_layer.audio_out.weight": "model-00013-of-00013.safetensors",
514
+ "final_layer.norm.weight": "model-00013-of-00013.safetensors",
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+ "final_layer.video_out.bias": "model-00013-of-00013.safetensors",
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+ "final_layer.video_out.weight": "model-00013-of-00013.safetensors",
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+ "rope.inv_freq": "model-00001-of-00013.safetensors",
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+ "time_embedder.proj_in.bias": "model-00001-of-00013.safetensors",
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+ "time_embedder.proj_in.weight": "model-00001-of-00013.safetensors",
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+ "token_refiner.blocks.1.attn.qkv_proj.weight": "model-00001-of-00013.safetensors",
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+ "token_refiner.blocks.1.mlp.fc1.weight": "model-00001-of-00013.safetensors",
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+ "token_refiner.blocks.1.mlp.fc2.weight": "model-00001-of-00013.safetensors",
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+ "token_refiner.blocks.1.norm1.weight": "model-00001-of-00013.safetensors",
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+ "token_refiner.blocks.1.norm2.weight": "model-00001-of-00013.safetensors",
538
+ "token_refiner.final_norm.weight": "model-00001-of-00013.safetensors",
539
+ "video_patch_proj.bias": "model-00001-of-00013.safetensors",
540
+ "video_patch_proj.weight": "model-00001-of-00013.safetensors"
541
+ }
542
+ }
FL2VA/video_vae/attention.py ADDED
@@ -0,0 +1,163 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Attention module for the MiniMax H3 visual VAE (inference-only bundle).
3
+ import os
4
+ import torch
5
+ import torch.nn as nn
6
+ import torch.distributed as dist
7
+ from typing import Optional
8
+ from diffusers.utils import logging
9
+
10
+ from .parallel import all_to_all_4D, get_parallel_state
11
+ from .func import apply_rotary_pos_emb
12
+ from .flash import flash_attn
13
+
14
+ logger = logging.get_logger(__name__) # pylint: disable=invalid-name
15
+
16
+
17
+ def _env_flag(name, default="0"):
18
+ value = os.environ.get(name, default)
19
+ return str(value).strip().lower() in ("1", "true", "yes", "on")
20
+
21
+
22
+ def _vit_norm_input(module, hidden_states):
23
+ if _env_flag("MINIMAX_H3_VAE_DECODER_VIT_FP32_NORM", "1"):
24
+ return hidden_states.float()
25
+ weight = getattr(module, "weight", None)
26
+ return hidden_states.to(getattr(weight, "dtype", hidden_states.dtype))
27
+
28
+
29
+ def maybe_checkpoint(owner, function, *args):
30
+ if owner.training and getattr(owner, "gradient_checkpointing", False):
31
+ raise NotImplementedError(
32
+ "gradient checkpointing is not supported in this inference-only bundle"
33
+ )
34
+ return function(*args)
35
+
36
+
37
+ class Attention(nn.Module):
38
+ def __init__(
39
+ self,
40
+ heads,
41
+ dim_head,
42
+ embed_dim: Optional[int] = None,
43
+ qk_norm_type: Optional[str] = None,
44
+ qk_norm_affine: bool = False,
45
+ bias: bool = True,
46
+ out_bias: Optional[bool] = None,
47
+ eps: float = 1e-5,
48
+ **kwargs,
49
+ ):
50
+ super().__init__()
51
+ self.dim_head = dim_head
52
+ self.heads = heads
53
+ self.attn_inner_dim = dim_head * heads
54
+ self.embed_dim = embed_dim if embed_dim is not None else self.attn_inner_dim
55
+
56
+ out_bias = out_bias if out_bias is not None else bias
57
+
58
+ if qk_norm_type is None:
59
+ self.norm_q = None
60
+ self.norm_k = None
61
+ elif qk_norm_type == "layer_norm":
62
+ self.norm_q = nn.LayerNorm(
63
+ dim_head, eps=eps, elementwise_affine=qk_norm_affine
64
+ )
65
+ self.norm_k = nn.LayerNorm(
66
+ dim_head, eps=eps, elementwise_affine=qk_norm_affine
67
+ )
68
+ elif qk_norm_type == "rms_norm":
69
+ self.norm_q = nn.RMSNorm(
70
+ dim_head, eps=eps, elementwise_affine=qk_norm_affine
71
+ )
72
+ self.norm_k = nn.RMSNorm(
73
+ dim_head, eps=eps, elementwise_affine=qk_norm_affine
74
+ )
75
+ else:
76
+ raise ValueError(
77
+ f"unknown qk_norm_type: {qk_norm_type}. Should be None,'layer_norm','rms_norm'"
78
+ )
79
+
80
+ self.to_qkv = nn.Linear(self.embed_dim, self.attn_inner_dim * 3, bias=bias)
81
+
82
+ self.to_out = nn.Linear(self.attn_inner_dim, self.embed_dim, bias=out_bias)
83
+
84
+ self.spatial_parallel = get_parallel_state().get("sp_enabled", False)
85
+
86
+ state = get_parallel_state()
87
+ sp_size = state.get("sp_size", 1)
88
+ tp_size = state.get("tp_size", 1)
89
+ parallel_size = sp_size * tp_size
90
+ if parallel_size > 1 and self.heads % parallel_size != 0:
91
+ raise ValueError(
92
+ f"num_heads {self.heads} must be divisible by sp_size * tp_size ({sp_size} * {tp_size} = {parallel_size})"
93
+ )
94
+
95
+ if len(kwargs) > 0 and (not dist.is_initialized() or dist.get_rank() == 0):
96
+ logger.warning(f"Unused kwargs: {kwargs}")
97
+
98
+ def _perform_attention(self, query, key, value, pack_info):
99
+ cu_seqlens = pack_info.get("cu_seqlens", None)
100
+ mask_mod = pack_info.get("mask_mod", None)
101
+ block_sparse = pack_info.get("block_sparse", None)
102
+
103
+ if cu_seqlens is not None:
104
+ raise NotImplementedError(
105
+ "varlen attention is not supported in this inference-only bundle"
106
+ )
107
+
108
+ if mask_mod is not None:
109
+ hidden_states = flash_attn(
110
+ query,
111
+ key,
112
+ value,
113
+ mask_mod=mask_mod,
114
+ block_sparse=block_sparse,
115
+ )
116
+ else:
117
+ hidden_states = flash_attn(
118
+ query,
119
+ key,
120
+ value,
121
+ )
122
+
123
+ return hidden_states
124
+
125
+ def perform_attention(self, query, key, value, pack_info={}):
126
+ return self._perform_attention(query, key, value, pack_info)
127
+
128
+ def forward(
129
+ self,
130
+ hidden_states: torch.Tensor,
131
+ rotary_pos_emb: Optional[torch.Tensor] = None,
132
+ pack_info: dict = {},
133
+ ) -> torch.Tensor:
134
+ batch_size, seq_len, _ = hidden_states.shape
135
+
136
+ qkv = self.to_qkv(hidden_states)
137
+ qkv = qkv.view(batch_size, seq_len, -1, 3 * self.dim_head)
138
+ query, key, value = torch.chunk(qkv, 3, dim=-1)
139
+
140
+ if self.spatial_parallel:
141
+ local_process_group = get_parallel_state()["sp_process_group"]
142
+ query = all_to_all_4D(query, 2, 1, group=local_process_group)
143
+ key = all_to_all_4D(key, 2, 1, group=local_process_group)
144
+ value = all_to_all_4D(value, 2, 1, group=local_process_group)
145
+
146
+ if self.norm_q is not None:
147
+ query = self.norm_q(_vit_norm_input(self.norm_q, query)).to(query.dtype)
148
+ if self.norm_k is not None:
149
+ key = self.norm_k(_vit_norm_input(self.norm_k, key)).to(key.dtype)
150
+
151
+ if rotary_pos_emb is not None:
152
+ query = apply_rotary_pos_emb(query, rotary_pos_emb)
153
+ key = apply_rotary_pos_emb(key, rotary_pos_emb)
154
+
155
+ hidden_states = self.perform_attention(query, key, value, pack_info)
156
+
157
+ if self.spatial_parallel:
158
+ hidden_states = all_to_all_4D(hidden_states, 1, 2, group=local_process_group)
159
+
160
+ hidden_states = hidden_states.reshape(batch_size, seq_len, -1)
161
+ hidden_states = self.to_out(hidden_states)
162
+
163
+ return hidden_states
FL2VA/video_vae/base_module.py ADDED
@@ -0,0 +1,282 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Transformer building blocks for the MiniMax H3 visual VAE ViT decoder.
3
+ import math
4
+ import os
5
+ import torch
6
+ import torch.nn as nn
7
+ from typing import Optional
8
+ from diffusers.utils import logging
9
+ from diffusers.utils.torch_utils import maybe_allow_in_graph
10
+
11
+ from .attention import Attention
12
+
13
+ logger = logging.get_logger(__name__) # pylint: disable=invalid-name
14
+
15
+
16
+ def _env_flag(name, default="0"):
17
+ value = os.environ.get(name, default)
18
+ return str(value).strip().lower() in ("1", "true", "yes", "on")
19
+
20
+
21
+ def _env_optional_bool(name, default=""):
22
+ value = str(os.environ.get(name, default)).strip().lower()
23
+ if value in ("", "default", "auto", "none", "unset"):
24
+ return None
25
+ return value not in ("0", "false", "no", "off", "disabled")
26
+
27
+
28
+ def _vit_torch_compile_kwargs(prefix):
29
+ kwargs = {}
30
+ backend = os.environ.get(f"{prefix}_BACKEND", "inductor").strip()
31
+ mode = os.environ.get(f"{prefix}_MODE", "reduce-overhead").strip()
32
+ if backend and backend.lower() not in ("default", "none"):
33
+ kwargs["backend"] = backend
34
+ if mode and mode.lower() not in ("default", "none"):
35
+ kwargs["mode"] = mode
36
+ kwargs["fullgraph"] = _env_flag(f"{prefix}_FULLGRAPH", "0")
37
+ dynamic = _env_optional_bool(f"{prefix}_DYNAMIC")
38
+ if dynamic is not None:
39
+ kwargs["dynamic"] = dynamic
40
+ return kwargs
41
+
42
+
43
+
44
+
45
+ def _vit_norm_input(module, hidden_states):
46
+ if _env_flag("MINIMAX_H3_VAE_DECODER_VIT_FP32_NORM", "1"):
47
+ return hidden_states.float()
48
+ return hidden_states.to(getattr(module.weight, "dtype", hidden_states.dtype))
49
+
50
+
51
+
52
+
53
+
54
+
55
+ class FeedForward(nn.Module):
56
+ def __init__(
57
+ self,
58
+ dim: int,
59
+ dim_out: Optional[int] = None,
60
+ mult: int = 4,
61
+ activation_fn: str = "silu",
62
+ bias: bool = True,
63
+ use_gated: bool = True,
64
+ glu_balanced: bool = False,
65
+ ):
66
+ super().__init__()
67
+ ratio = 2 / 3 if (use_gated and glu_balanced) else 1
68
+ inner_dim = round(dim * mult * ratio)
69
+ dim_out = dim_out if dim_out is not None else dim
70
+ self.use_gated = use_gated
71
+
72
+ if use_gated:
73
+ self.w1 = nn.Linear(dim, inner_dim * 2, bias=bias)
74
+ else:
75
+ self.w1 = nn.Linear(dim, inner_dim, bias=bias)
76
+
77
+ if activation_fn == "silu":
78
+ self.act_fn = nn.SiLU()
79
+ elif activation_fn == "gelu":
80
+ self.act_fn = nn.GELU()
81
+ elif activation_fn == "gelu-approximate":
82
+ self.act_fn = nn.GELU(approximate="tanh")
83
+ else:
84
+ raise ValueError(f"Unsupported activation function: {activation_fn}")
85
+
86
+ self.w2 = nn.Linear(inner_dim, dim_out, bias=bias)
87
+ self._compile_forward_enabled = _env_flag(
88
+ "MINIMAX_H3_VAE_DECODER_VIT_FF_TORCH_COMPILE", "0"
89
+ )
90
+ self._compile_forward_fatal = _env_flag(
91
+ "MINIMAX_H3_VAE_DECODER_VIT_FF_TORCH_COMPILE_FATAL", "0"
92
+ )
93
+ self._compiled_forward = None
94
+
95
+ def _forward_impl(self, hidden_states: torch.Tensor) -> torch.Tensor:
96
+ hidden_states = self.w1(hidden_states)
97
+
98
+ if self.use_gated:
99
+ gate, hidden_states = hidden_states.chunk(2, dim=-1)
100
+ hidden_states = self.act_fn(gate) * hidden_states
101
+ else:
102
+ hidden_states = self.act_fn(hidden_states)
103
+
104
+ hidden_states = self.w2(hidden_states)
105
+ return hidden_states
106
+
107
+ def _get_forward_impl(self):
108
+ if not self._compile_forward_enabled:
109
+ return self._forward_impl
110
+ if self._compiled_forward is not None:
111
+ return self._compiled_forward
112
+ if not hasattr(torch, "compile"):
113
+ message = "torch.compile is unavailable; falling back to eager ViT FeedForward"
114
+ if self._compile_forward_fatal:
115
+ raise RuntimeError(message)
116
+ logger.warning(f"[ViTFeedForward] {message}")
117
+ self._compile_forward_enabled = False
118
+ return self._forward_impl
119
+
120
+ kwargs = _vit_torch_compile_kwargs("MINIMAX_H3_VAE_DECODER_VIT_FF_TORCH_COMPILE")
121
+ try:
122
+ self._compiled_forward = torch.compile(self._forward_impl, **kwargs)
123
+ logger.info(f"[ViTFeedForward] torch.compile enabled kwargs={kwargs}")
124
+ except Exception as exc:
125
+ if self._compile_forward_fatal:
126
+ raise
127
+ logger.warning(
128
+ f"[ViTFeedForward] torch.compile setup failed: {type(exc).__name__}: {exc}; "
129
+ "falling back to eager"
130
+ )
131
+ self._compile_forward_enabled = False
132
+ self._compiled_forward = None
133
+ return self._forward_impl
134
+ return self._compiled_forward
135
+
136
+ def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
137
+ forward_impl = self._get_forward_impl()
138
+ try:
139
+ return forward_impl(hidden_states)
140
+ except Exception as exc:
141
+ if (
142
+ self._compile_forward_enabled
143
+ and self._compiled_forward is not None
144
+ and forward_impl is self._compiled_forward
145
+ and not self._compile_forward_fatal
146
+ ):
147
+ logger.warning(
148
+ f"[ViTFeedForward] compiled forward failed: {type(exc).__name__}: {exc}; "
149
+ "disabling compile and retrying eager"
150
+ )
151
+ self._compile_forward_enabled = False
152
+ self._compiled_forward = None
153
+ return self._forward_impl(hidden_states)
154
+ raise
155
+
156
+
157
+ class RotaryEmbeddingND(nn.Module):
158
+ def __init__(self, dim, rotary_base=10000, n_dim=3, use_angle=False):
159
+ super().__init__()
160
+ self.dim = dim
161
+ self.n_dim = n_dim
162
+
163
+ if dim % (2 * n_dim) != 0:
164
+ raise ValueError(
165
+ f"head_dim {dim} must be divisible by 2 * n_dim {2 * n_dim}"
166
+ )
167
+
168
+ if use_angle:
169
+ self.angle_scale = 2.0 * math.pi
170
+ else:
171
+ self.angle_scale = 1.0
172
+
173
+ inv_freq = 1 / rotary_base ** torch.arange(
174
+ 0, 1, 2 * n_dim / dim, dtype=torch.float32
175
+ )
176
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
177
+
178
+ def forward(self, img_ids):
179
+ B, N, D = img_ids.shape
180
+ if D != self.n_dim:
181
+ raise ValueError(f"Expected {self.n_dim} dimensions, got {D}")
182
+
183
+ with torch.autocast("cuda", enabled=False):
184
+ angles = (
185
+ self.angle_scale
186
+ * img_ids[:, :, :, None]
187
+ * self.inv_freq.to(img_ids.device)[None, None, None, :]
188
+ )
189
+ angles = angles.flatten(2, 3)
190
+ angles = angles.tile(2)
191
+ angles = angles.unsqueeze(2)
192
+
193
+ cos = torch.cos(angles)
194
+ sin = torch.sin(angles)
195
+
196
+ return cos.to(dtype=img_ids.dtype), sin.to(dtype=img_ids.dtype)
197
+
198
+
199
+ @maybe_allow_in_graph
200
+ class TransformerBlock(nn.Module):
201
+ def __init__(
202
+ self,
203
+ heads: int,
204
+ dim_head: int,
205
+ embed_dim: Optional[int] = None,
206
+ ffn_glu_balanced: bool = False,
207
+ norm_type: str = "layer_norm",
208
+ norm_affine: bool = True,
209
+ qk_norm_type: str = "rms_norm",
210
+ qk_norm_affine: bool = False,
211
+ ffn_activation_fn: str = "silu",
212
+ ffn_use_gated: bool = True,
213
+ use_scale: bool = True,
214
+ bias: bool = True,
215
+ eps: float = 1e-5,
216
+ **kwargs,
217
+ ):
218
+ super().__init__()
219
+ dim = embed_dim if embed_dim is not None else dim_head * heads
220
+ self.use_scale = use_scale
221
+
222
+ if norm_type == "layer_norm":
223
+ norm_class = nn.LayerNorm
224
+ elif norm_type == "rms_norm":
225
+ norm_class = nn.RMSNorm
226
+ else:
227
+ raise ValueError(f"unknown norm_type {norm_type}")
228
+
229
+ self.norm1 = norm_class(
230
+ dim,
231
+ elementwise_affine=norm_affine,
232
+ eps=eps,
233
+ )
234
+ self.attn = Attention(
235
+ heads=heads,
236
+ dim_head=dim_head,
237
+ embed_dim=dim,
238
+ qk_norm_type=qk_norm_type,
239
+ qk_norm_affine=qk_norm_affine,
240
+ bias=bias,
241
+ eps=eps,
242
+ **kwargs,
243
+ )
244
+ if use_scale:
245
+ self.scale1 = nn.Parameter(torch.zeros(dim))
246
+
247
+ self.norm2 = norm_class(
248
+ dim,
249
+ elementwise_affine=norm_affine,
250
+ eps=eps,
251
+ )
252
+ self.ff = FeedForward(
253
+ dim=dim,
254
+ activation_fn=ffn_activation_fn,
255
+ bias=bias,
256
+ use_gated=ffn_use_gated,
257
+ glu_balanced=ffn_glu_balanced,
258
+ )
259
+ if use_scale:
260
+ self.scale2 = nn.Parameter(torch.zeros(dim))
261
+
262
+ def forward(
263
+ self,
264
+ hidden_states: torch.FloatTensor,
265
+ rotary_pos_emb: Optional[torch.FloatTensor] = None,
266
+ pack_info: dict = {},
267
+ ):
268
+ norm_hidden_states = self.norm1(_vit_norm_input(self.norm1, hidden_states)).to(hidden_states.dtype)
269
+ attn_output = self.attn(norm_hidden_states, rotary_pos_emb, pack_info)
270
+ if self.use_scale:
271
+ hidden_states = hidden_states + attn_output * self.scale1
272
+ else:
273
+ hidden_states = hidden_states + attn_output
274
+
275
+ norm_hidden_states = self.norm2(_vit_norm_input(self.norm2, hidden_states)).to(hidden_states.dtype)
276
+ ff_output = self.ff(norm_hidden_states)
277
+ if self.use_scale:
278
+ hidden_states = hidden_states + ff_output * self.scale2
279
+ else:
280
+ hidden_states = hidden_states + ff_output
281
+
282
+ return hidden_states
FL2VA/video_vae/config.json ADDED
@@ -0,0 +1,74 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "_class_name": "MiniMaxH3VideoVAE",
3
+ "_diffusers_version": "0.32.2",
4
+ "mode": "standalone",
5
+ "auto_map": {
6
+ "AutoModel": "minimax_h3_video_vae.MiniMaxH3VideoVAE"
7
+ },
8
+ "source_path": "source",
9
+ "source_class_name": "AutoencoderKLLegacy",
10
+ "vae_clip_length": 17,
11
+ "vae_token_drop": 3,
12
+ "vae_encoder_tiling": 1,
13
+ "vae_decoder_tiling": 1,
14
+ "vae_parallel_tiling": 1,
15
+ "vae_tile_size": 256,
16
+ "vae_tile_overlap_min": 64,
17
+ "vae_encoder_parallel": 0,
18
+ "vae_decoder_parallel": 0,
19
+ "vae_chunk_dim": -1,
20
+ "source_safetensors_path": "model.safetensors",
21
+ "latent_channels": 24,
22
+ "latents_mean": [
23
+ 0.858090341091156,
24
+ -0.9606591463088989,
25
+ 1.0661640167236328,
26
+ -0.5090325474739075,
27
+ -0.2727581858634949,
28
+ -1.3675414323806763,
29
+ -0.2553254961967468,
30
+ -0.26907554268836975,
31
+ -0.5376840829849243,
32
+ -0.0464097298681736,
33
+ 0.6657370328903198,
34
+ 0.19690127670764923,
35
+ -0.5460608005523682,
36
+ -0.4035342037677765,
37
+ -0.23683024942874908,
38
+ 0.25928452610969543,
39
+ -0.30133944749832153,
40
+ 0.211341992020607,
41
+ -1.1206848621368408,
42
+ 0.3581933379173279,
43
+ -0.04225143790245056,
44
+ 0.2604829967021942,
45
+ 0.22864092886447906,
46
+ 0.7056031823158264
47
+ ],
48
+ "latents_std": [
49
+ 1.2223774194717407,
50
+ 1.2767263650894165,
51
+ 1.68317747116088865,
52
+ 1.7549455165863037,
53
+ 1.5636216402053833,
54
+ 2.194143533706665,
55
+ 0.96531379222869875,
56
+ 1.05698859691619875,
57
+ 0.841948926448822,
58
+ 0.7729952931404114,
59
+ 1.8955937623977661,
60
+ 0.946841835975647,
61
+ 0.7996809482574463,
62
+ 0.44988900423049925,
63
+ 0.7197399735450745,
64
+ 0.69362932443618775,
65
+ 2.961095094680786,
66
+ 2.7694199085235595,
67
+ 3.0496184825897215,
68
+ 2.1088054180145265,
69
+ 3.276226282119751,
70
+ 3.1627357006073,
71
+ 2.28168129920959475,
72
+ 2.6127843856811525
73
+ ]
74
+ }
FL2VA/video_vae/conv.py ADDED
@@ -0,0 +1,159 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Spatial-parallel 3D convolution for the MiniMax H3 visual VAE.
3
+ import torch
4
+ import torch.nn as nn
5
+ import torch.nn.functional as F
6
+
7
+ from .parallel import get_parallel_state, exchange_borders
8
+
9
+
10
+
11
+
12
+ class BaseConv3d(nn.Conv3d):
13
+ def __init__(
14
+ self,
15
+ in_channels,
16
+ out_channels,
17
+ kernel_size,
18
+ stride=1,
19
+ padding=0,
20
+ bias=True,
21
+ padding_mode="zeros",
22
+ padding_mode_t=None,
23
+ causal=True,
24
+ ):
25
+ super().__init__(
26
+ in_channels,
27
+ out_channels,
28
+ kernel_size=kernel_size,
29
+ stride=stride,
30
+ padding=padding,
31
+ bias=bias,
32
+ padding_mode=padding_mode,
33
+ )
34
+ padding_mode = "constant" if padding_mode == "zeros" else padding_mode
35
+ padding_mode_t = "constant" if padding_mode_t == "zeros" else padding_mode_t
36
+ self.pad_mode = padding_mode
37
+ self.pad_mode_t = padding_mode_t or ("constant" if causal else "replicate")
38
+ self.causal = causal
39
+
40
+ def _apply_temporal_padding(self, x):
41
+ B, C, D, H, W = x.shape
42
+ if D > 1:
43
+ pad_size = (
44
+ 0,
45
+ 0,
46
+ 0,
47
+ 0,
48
+ self.padding[0] * 2 if self.causal else self.padding[0],
49
+ 0 if self.causal else self.padding[0],
50
+ )
51
+ return F.pad(x, pad_size, mode=self.pad_mode_t)
52
+ else:
53
+ if self.pad_mode_t == "constant":
54
+ assert self.causal, "Zeros padding is only supported for causal mode"
55
+ zeros = torch.zeros_like(x[:, :, :1, :, :]).expand(
56
+ -1, -1, self.kernel_size[0] - 1, -1, -1
57
+ )
58
+ return torch.cat([zeros, x], dim=2)
59
+ else:
60
+ return x.expand(-1, -1, self.kernel_size[0], -1, -1)
61
+
62
+ def _apply_padding(self, x):
63
+ if sum(self.padding) == 0:
64
+ return x
65
+
66
+ x = F.pad(
67
+ x,
68
+ (self.padding[2], self.padding[2], self.padding[1], self.padding[1], 0, 0),
69
+ mode=self.pad_mode,
70
+ )
71
+
72
+ x = self._apply_temporal_padding(x)
73
+ return x
74
+
75
+ def forward(self, x):
76
+ if sum(self.padding) == 0:
77
+ return super().forward(x)
78
+
79
+ x = self._apply_padding(x)
80
+ return F.conv3d(
81
+ x,
82
+ self.weight,
83
+ self.bias,
84
+ stride=self.stride,
85
+ padding=0,
86
+ dilation=self.dilation,
87
+ )
88
+
89
+
90
+ class SpatialParallelConv3d(BaseConv3d):
91
+ def __init__(
92
+ self,
93
+ in_channels,
94
+ out_channels,
95
+ kernel_size,
96
+ stride=1,
97
+ padding=0,
98
+ bias=True,
99
+ padding_mode="zeros",
100
+ padding_mode_t=None,
101
+ causal=True,
102
+ ):
103
+ super().__init__(
104
+ in_channels,
105
+ out_channels,
106
+ kernel_size=kernel_size,
107
+ stride=stride,
108
+ padding=padding,
109
+ bias=bias,
110
+ padding_mode=padding_mode,
111
+ padding_mode_t=padding_mode_t,
112
+ causal=causal,
113
+ )
114
+ self.spatial_parallel = False
115
+ self.chunk_dim = -1
116
+
117
+ def _exchange_borders(self, x, sp_rank, sp_size):
118
+ if self.chunk_dim == -1:
119
+ pad = self.padding[2]
120
+ elif self.chunk_dim == -2:
121
+ pad = self.padding[1]
122
+ else:
123
+ raise ValueError(f"Invalid chunk dimension: {self.chunk_dim}")
124
+
125
+ if pad == 0:
126
+ return x
127
+
128
+ local_process_group = get_parallel_state()["sp_process_group"]
129
+ return exchange_borders(
130
+ x,
131
+ pad,
132
+ self.pad_mode,
133
+ sp_rank,
134
+ sp_size,
135
+ local_process_group,
136
+ dim=self.chunk_dim,
137
+ )
138
+
139
+ def _apply_padding(self, x):
140
+ if not self.spatial_parallel:
141
+ return super()._apply_padding(x)
142
+
143
+ state = get_parallel_state()
144
+
145
+ x = self._exchange_borders(x, state["sp_rank"], state["sp_size"])
146
+
147
+ if self.chunk_dim == -1:
148
+ x = F.pad(
149
+ x, (0, 0, self.padding[1], self.padding[1], 0, 0), mode=self.pad_mode
150
+ )
151
+ elif self.chunk_dim == -2:
152
+ x = F.pad(
153
+ x, (self.padding[2], self.padding[2], 0, 0, 0, 0), mode=self.pad_mode
154
+ )
155
+ else:
156
+ raise ValueError(f"Invalid chunk dimension: {self.chunk_dim}")
157
+
158
+ x = self._apply_temporal_padding(x)
159
+ return x
FL2VA/video_vae/flash.py ADDED
@@ -0,0 +1,178 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Torch-native attention implemented with PyTorch SDPA instead of FA4/CUTLASS.
3
+ import os
4
+ from contextlib import nullcontext
5
+
6
+ import torch
7
+ import torch.nn.functional as F
8
+
9
+
10
+ _BLOCK_CAUSAL_MASK_MOD_CACHE = {}
11
+
12
+
13
+
14
+
15
+ def _as_bool_mask(mask, *, device):
16
+ if not isinstance(mask, torch.Tensor):
17
+ mask = torch.as_tensor(mask, device=device)
18
+ return mask.to(device=device, dtype=torch.bool)
19
+
20
+
21
+ def _ensure_nonempty_rows(mask):
22
+ if mask.numel() == 0 or mask.shape[-1] == 0:
23
+ return mask
24
+ empty = ~mask.any(dim=-1)
25
+ if empty.any():
26
+ mask = mask.clone()
27
+ mask[..., 0] |= empty
28
+ return mask
29
+
30
+
31
+ def _sdpa_kernel_context():
32
+ backend_name = os.environ.get("MINIMAX_H3_TORCH_SDPA_BACKEND", "auto").lower()
33
+ if backend_name in {"", "auto", "default"}:
34
+ return nullcontext()
35
+
36
+ from torch.nn.attention import SDPBackend, sdpa_kernel
37
+
38
+ backends = {
39
+ "math": SDPBackend.MATH,
40
+ "flash": SDPBackend.FLASH_ATTENTION,
41
+ "flash_attention": SDPBackend.FLASH_ATTENTION,
42
+ "efficient": SDPBackend.EFFICIENT_ATTENTION,
43
+ "mem_efficient": SDPBackend.EFFICIENT_ATTENTION,
44
+ "cudnn": SDPBackend.CUDNN_ATTENTION,
45
+ "cudnn_attention": SDPBackend.CUDNN_ATTENTION,
46
+ }
47
+ if backend_name not in backends:
48
+ raise ValueError(
49
+ "MINIMAX_H3_TORCH_SDPA_BACKEND must be one of "
50
+ f"{sorted([*backends, 'auto', 'default'])}, got {backend_name!r}"
51
+ )
52
+ return sdpa_kernel(backends=[backends[backend_name]])
53
+
54
+
55
+ def _sdpa_attention(query, key, value, causal=False, attn_mask=None):
56
+ # query/key/value arrive as [B, S, H, D]; PyTorch SDPA expects
57
+ # [B, H, S, D].
58
+ q = query.transpose(1, 2)
59
+ k = key.transpose(1, 2)
60
+ v = value.transpose(1, 2)
61
+ if attn_mask is not None and attn_mask.dim() == 3:
62
+ attn_mask = attn_mask.unsqueeze(0)
63
+ with _sdpa_kernel_context():
64
+ out = F.scaled_dot_product_attention(
65
+ q,
66
+ k,
67
+ v,
68
+ attn_mask=attn_mask,
69
+ dropout_p=0.0,
70
+ is_causal=causal,
71
+ )
72
+ return out.transpose(1, 2).nan_to_num(0.0)
73
+
74
+
75
+ def _mask_mod_to_dense(mask_mod, batch, heads, q_len, kv_len, device, aux_tensors=None):
76
+ q_idx = torch.arange(q_len, device=device).view(q_len, 1)
77
+ kv_idx = torch.arange(kv_len, device=device).view(1, kv_len)
78
+ dense = torch.empty((batch, heads, q_len, kv_len), dtype=torch.bool, device=device)
79
+ for b in range(batch):
80
+ b_idx = torch.tensor(b, device=device)
81
+ for h in range(heads):
82
+ h_idx = torch.tensor(h, device=device)
83
+ mask = mask_mod(b_idx, h_idx, q_idx, kv_idx, None, aux_tensors)
84
+ dense[b, h] = _as_bool_mask(mask, device=device)
85
+ return _ensure_nonempty_rows(dense)
86
+
87
+
88
+ #########################################################
89
+ # Block causal attention
90
+ #########################################################
91
+
92
+
93
+ def make_block_causal_mask_mod(num_tokens, block_size, num_special=0, suffix=False):
94
+ if num_tokens < 0:
95
+ raise ValueError(f"num_tokens must be non-negative, got {num_tokens}")
96
+ if block_size <= 0:
97
+ raise ValueError(f"block_size must be positive, got {block_size}")
98
+ if num_special < 0:
99
+ raise ValueError(f"num_special must be non-negative, got {num_special}")
100
+
101
+ cache_key = (num_tokens, block_size, num_special, suffix)
102
+ if cache_key in _BLOCK_CAUSAL_MASK_MOD_CACHE:
103
+ return _BLOCK_CAUSAL_MASK_MOD_CACHE[cache_key]
104
+
105
+ if suffix:
106
+
107
+ def mask_mod(b, h, q_idx, kv_idx, seqlen_info, aux_tensors):
108
+ del b, h, seqlen_info, aux_tensors
109
+ q_is_special = q_idx >= num_tokens
110
+ kv_is_special = kv_idx >= num_tokens
111
+ return q_is_special | kv_is_special | (
112
+ q_idx // block_size >= kv_idx // block_size
113
+ )
114
+
115
+ else:
116
+
117
+ def mask_mod(b, h, q_idx, kv_idx, seqlen_info, aux_tensors):
118
+ del b, h, seqlen_info, aux_tensors
119
+ q_is_special = q_idx < num_special
120
+ kv_is_special = kv_idx < num_special
121
+ q_block_idx = (q_idx - num_special) // block_size
122
+ kv_block_idx = (kv_idx - num_special) // block_size
123
+ return q_is_special | kv_is_special | (q_block_idx >= kv_block_idx)
124
+
125
+ mask_mod.block_sparse_cache_key = (
126
+ "block_causal",
127
+ num_tokens,
128
+ block_size,
129
+ num_special,
130
+ suffix,
131
+ )
132
+ _BLOCK_CAUSAL_MASK_MOD_CACHE[cache_key] = mask_mod
133
+ return mask_mod
134
+
135
+
136
+
137
+
138
+
139
+
140
+ #########################################################
141
+ # Public entry point
142
+ #########################################################
143
+
144
+
145
+ @torch.compiler.disable
146
+ def flash_attn(
147
+ query: torch.Tensor,
148
+ key: torch.Tensor,
149
+ value: torch.Tensor,
150
+ causal: bool = False,
151
+ mask_mod=None,
152
+ block_sparse=None,
153
+ aux_tensors=None,
154
+ ) -> torch.Tensor:
155
+ use_masked = mask_mod is not None or block_sparse is not None
156
+
157
+ if block_sparse is not None and mask_mod is None:
158
+ raise ValueError("block_sparse requires mask_mod")
159
+ if causal and mask_mod is not None:
160
+ raise ValueError("causal must be encoded in mask_mod when using masked attention")
161
+ if aux_tensors is not None and not use_masked:
162
+ raise ValueError("aux_tensors is only supported with masked attention")
163
+
164
+ if use_masked:
165
+ batch, q_len, heads, _ = query.shape
166
+ kv_len = key.shape[1]
167
+ dense_mask = _mask_mod_to_dense(
168
+ mask_mod,
169
+ batch,
170
+ heads,
171
+ q_len,
172
+ kv_len,
173
+ query.device,
174
+ aux_tensors=aux_tensors,
175
+ )
176
+ return _sdpa_attention(query, key, value, attn_mask=dense_mask)
177
+
178
+ return _sdpa_attention(query, key, value, causal=causal)
FL2VA/video_vae/func.py ADDED
@@ -0,0 +1,163 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Token-id and rotary-embedding helpers for the MiniMax H3 visual VAE.
3
+ import os
4
+ import torch
5
+ from typing import Tuple
6
+
7
+ from diffusers.utils import logging
8
+
9
+ logger = logging.get_logger(__name__) # pylint: disable=invalid-name
10
+
11
+
12
+ def create_token_ids(patch_dims, device, dtype, id_type="length_normalized", flatten=True):
13
+ coords_list = []
14
+
15
+ if isinstance(id_type, str):
16
+ id_type_list = [id_type] * len(patch_dims)
17
+ elif isinstance(id_type, list):
18
+ id_type_list = id_type
19
+ if len(id_type_list) != len(patch_dims):
20
+ raise ValueError("id_type list must match patch_dims")
21
+ else:
22
+ raise ValueError("id_type must be a string or a list")
23
+
24
+ if "area_normalized" in id_type_list or id_type == "area_normalized":
25
+ raise NotImplementedError(
26
+ "area_normalized id_type is not supported in this inference-only bundle"
27
+ )
28
+
29
+ for _dim_size, _id_type in zip(patch_dims, id_type_list):
30
+ if isinstance(_dim_size, torch.Tensor):
31
+ coords_list.append(_dim_size.to(device=device, dtype=dtype))
32
+ continue
33
+
34
+ if _id_type == "length_normalized":
35
+ coords = torch.arange(0.5, _dim_size, dtype=dtype, device=device)
36
+ coords = coords / _dim_size
37
+ coords = 2.0 * coords - 1.0
38
+ else:
39
+ coords = torch.arange(_dim_size, dtype=dtype, device=device)
40
+
41
+ coords_list.append(coords)
42
+
43
+ coords = torch.stack(torch.meshgrid(*coords_list, indexing="ij"), dim=-1)
44
+ if flatten:
45
+ coords = coords.flatten(0, len(patch_dims) - 1)
46
+
47
+ return coords.unsqueeze(0)
48
+
49
+
50
+ def _env_flag(name, default="0"):
51
+ value = os.environ.get(name, default)
52
+ return str(value).strip().lower() in ("1", "true", "yes", "on")
53
+
54
+
55
+ def _env_optional_bool(name, default=""):
56
+ value = str(os.environ.get(name, default)).strip().lower()
57
+ if value in ("", "default", "auto", "none", "unset"):
58
+ return None
59
+ return value not in ("0", "false", "no", "off", "disabled")
60
+
61
+
62
+ def _vit_torch_compile_kwargs(prefix):
63
+ kwargs = {}
64
+ backend = os.environ.get(f"{prefix}_BACKEND", "inductor").strip()
65
+ mode = os.environ.get(f"{prefix}_MODE", "reduce-overhead").strip()
66
+ if backend and backend.lower() not in ("default", "none"):
67
+ kwargs["backend"] = backend
68
+ if mode and mode.lower() not in ("default", "none"):
69
+ kwargs["mode"] = mode
70
+ kwargs["fullgraph"] = _env_flag(f"{prefix}_FULLGRAPH", "0")
71
+ dynamic = _env_optional_bool(f"{prefix}_DYNAMIC")
72
+ if dynamic is not None:
73
+ kwargs["dynamic"] = dynamic
74
+ return kwargs
75
+
76
+
77
+ def _rotate_half(x: torch.Tensor) -> torch.Tensor:
78
+ x1, x2 = torch.chunk(x, 2, dim=-1)
79
+ return torch.cat((-x2, x1), dim=-1)
80
+
81
+
82
+ def _apply_rotary_pos_emb_impl(
83
+ t: torch.Tensor, rotary_pos_emb: Tuple[torch.Tensor, torch.Tensor]
84
+ ) -> torch.Tensor:
85
+ cos, sin = rotary_pos_emb
86
+
87
+ if cos.dim() != 4:
88
+ raise ValueError(f"cos must be [B, N, 1, D], got {cos.shape}")
89
+
90
+ cos = cos.to(t.dtype)
91
+ sin = sin.to(t.dtype)
92
+
93
+ rot_dim = cos.shape[-1]
94
+ t_dim = t.shape[-1]
95
+
96
+ if rot_dim < t_dim:
97
+ t_rot, t_pass = t[..., :rot_dim], t[..., rot_dim:]
98
+ t_rot = (t_rot * cos) + (_rotate_half(t_rot) * sin)
99
+ t = torch.cat((t_rot, t_pass), dim=-1)
100
+ else:
101
+ t = (t * cos) + (_rotate_half(t) * sin)
102
+
103
+ return t
104
+
105
+ _COMPILED_APPLY_ROTARY_POS_EMB = None
106
+ _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED = False
107
+
108
+
109
+ def _get_apply_rotary_pos_emb_impl():
110
+ global _COMPILED_APPLY_ROTARY_POS_EMB, _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED
111
+ if _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED or not _env_flag(
112
+ "MINIMAX_H3_VAE_DECODER_VIT_ROPE_TORCH_COMPILE", "0"
113
+ ):
114
+ return _apply_rotary_pos_emb_impl
115
+ if _COMPILED_APPLY_ROTARY_POS_EMB is not None:
116
+ return _COMPILED_APPLY_ROTARY_POS_EMB
117
+ if not hasattr(torch, "compile"):
118
+ message = "torch.compile is unavailable; falling back to eager ViT rotary embedding"
119
+ if _env_flag("MINIMAX_H3_VAE_DECODER_VIT_ROPE_TORCH_COMPILE_FATAL", "0"):
120
+ raise RuntimeError(message)
121
+ logger.warning(f"[ViTRope] {message}")
122
+ _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED = True
123
+ return _apply_rotary_pos_emb_impl
124
+
125
+ kwargs = _vit_torch_compile_kwargs("MINIMAX_H3_VAE_DECODER_VIT_ROPE_TORCH_COMPILE")
126
+ try:
127
+ _COMPILED_APPLY_ROTARY_POS_EMB = torch.compile(
128
+ _apply_rotary_pos_emb_impl, **kwargs
129
+ )
130
+ logger.info(f"[ViTRope] torch.compile enabled kwargs={kwargs}")
131
+ except Exception as exc:
132
+ if _env_flag("MINIMAX_H3_VAE_DECODER_VIT_ROPE_TORCH_COMPILE_FATAL", "0"):
133
+ raise
134
+ logger.warning(
135
+ f"[ViTRope] torch.compile setup failed: {type(exc).__name__}: {exc}; "
136
+ "falling back to eager"
137
+ )
138
+ _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED = True
139
+ _COMPILED_APPLY_ROTARY_POS_EMB = None
140
+ return _apply_rotary_pos_emb_impl
141
+ return _COMPILED_APPLY_ROTARY_POS_EMB
142
+
143
+
144
+ def apply_rotary_pos_emb(
145
+ t: torch.Tensor, rotary_pos_emb: Tuple[torch.Tensor, torch.Tensor]
146
+ ) -> torch.Tensor:
147
+ global _COMPILED_APPLY_ROTARY_POS_EMB, _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED
148
+ fn = _get_apply_rotary_pos_emb_impl()
149
+ try:
150
+ return fn(t, rotary_pos_emb)
151
+ except Exception as exc:
152
+ if (
153
+ fn is _COMPILED_APPLY_ROTARY_POS_EMB
154
+ and not _env_flag("MINIMAX_H3_VAE_DECODER_VIT_ROPE_TORCH_COMPILE_FATAL", "0")
155
+ ):
156
+ logger.warning(
157
+ f"[ViTRope] compiled call failed: {type(exc).__name__}: {exc}; "
158
+ "disabling compile and retrying eager"
159
+ )
160
+ _APPLY_ROTARY_POS_EMB_COMPILE_DISABLED = True
161
+ _COMPILED_APPLY_ROTARY_POS_EMB = None
162
+ return _apply_rotary_pos_emb_impl(t, rotary_pos_emb)
163
+ raise
FL2VA/video_vae/klvae.py ADDED
@@ -0,0 +1,1258 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # MiniMax H3 visual VAE: 3D causal CNN encoder + ViT3D decoder (inference-only bundle).
3
+ import os
4
+ import math
5
+ import numpy as np
6
+ import torch
7
+ import torch.nn as nn
8
+ import torch.distributed as dist
9
+ from typing import List, Union
10
+ from PIL import Image
11
+ from contextlib import nullcontext
12
+ from diffusers.models import ModelMixin
13
+ from diffusers.configuration_utils import ConfigMixin, register_to_config
14
+ from diffusers.loaders.single_file_model import FromOriginalModelMixin
15
+ from diffusers.utils import logging
16
+
17
+ from .parallel import get_parallel_state, all_gather_var_shape
18
+ from .utils import apply_spatial_parallel
19
+ from .normalize import get_normalize_transform, get_denormalize_transform
20
+ from .vae_vit import ViT3DDecoder
21
+ from .vae_cnn import EncoderFCN3D
22
+ from .vae_module import DiagonalGaussianDistribution, ClsTokenAggregator
23
+ from .vae_processor import VAEProcessor
24
+
25
+
26
+ logger = logging.get_logger(__name__) # pylint: disable=invalid-name
27
+
28
+
29
+ def _resolve_temporal_cat_dtype():
30
+ raw = os.environ.get("MINIMAX_H3_VAE_DECODER_TEMPORAL_CAT_DTYPE", "").strip().lower()
31
+ if raw in ("", "0", "false", "no", "off", "none", "keep", "default"):
32
+ return None
33
+ mapping = {
34
+ "fp16": torch.float16,
35
+ "float16": torch.float16,
36
+ "half": torch.float16,
37
+ "bf16": torch.bfloat16,
38
+ "bfloat16": torch.bfloat16,
39
+ "fp32": torch.float32,
40
+ "float32": torch.float32,
41
+ }
42
+ if raw not in mapping:
43
+ raise ValueError(
44
+ "MINIMAX_H3_VAE_DECODER_TEMPORAL_CAT_DTYPE must be one of "
45
+ "fp16|bf16|fp32|keep, got %r" % raw
46
+ )
47
+ return mapping[raw]
48
+
49
+
50
+ def _resolve_temporal_stream_cat():
51
+ raw = os.environ.get("MINIMAX_H3_VAE_DECODER_STREAM_TEMPORAL_CAT", "1").strip().lower()
52
+ return raw not in ("0", "false", "no", "off", "disable", "disabled")
53
+
54
+
55
+ class AutoencoderKL(ModelMixin, ConfigMixin, FromOriginalModelMixin):
56
+ r"""
57
+ Abstract shared base for the MiniMax H3 visual VAE.
58
+
59
+ This class only carries the shared inference machinery (temporal
60
+ chunking, tiling, encode/decode entry points). Instantiate the concrete
61
+ subclass ``AutoencoderKLLegacy`` via ``from_pretrained`` instead.
62
+ """
63
+
64
+ _supports_gradient_checkpointing = True
65
+ _compilable_modules = ["encoder", "decoder"]
66
+ _deprecated_kwargs = [
67
+ "clip_length",
68
+ "token_drop",
69
+ "isolated_first_frame",
70
+ "isolated_last_frame",
71
+ "isolated_key_frame",
72
+ "encoder_tiling",
73
+ "decoder_tiling",
74
+ "parallel_tiling",
75
+ "stack_tiling",
76
+ "tile_size",
77
+ "tile_overlap_min",
78
+ "decoder_tile_size",
79
+ "decoder_tile_overlap_min",
80
+ "latent_patch_size",
81
+ "crop_mode",
82
+ "encoder_parallel",
83
+ "decoder_parallel",
84
+ "chunk_dim",
85
+ ] # legacy config keys accepted by from_pretrained for checkpoint compatibility
86
+
87
+
88
+ def _set_gradient_checkpointing(self, module, value=False):
89
+ if hasattr(module, "gradient_checkpointing"):
90
+ module.gradient_checkpointing = value
91
+
92
+ def _freeze_nested_module(self, module_path):
93
+ parts = module_path.split(".")
94
+ module = self
95
+ for part in parts:
96
+ module = getattr(module, part)
97
+ module.requires_grad_(False)
98
+
99
+ def setup_forward(self, **kwargs):
100
+ self.clip_length = kwargs.get("clip_length", 17)
101
+ self.token_drop = kwargs.get("token_drop", 0)
102
+ self.frame_drop = self.token_drop * self.vae_ratio_t
103
+ self.frame_pre_padding = (-self.clip_length) % self.vae_ratio_t
104
+ self.tokens_chunk_size = math.ceil(self.clip_length / self.vae_ratio_t)
105
+ self.token_overlap = (-self.token_drop) % self.tokens_chunk_size
106
+ self.frame_overlap = max(self.token_overlap * self.vae_ratio_t - self.frame_pre_padding, 0)
107
+ self.isolated_first_frame = kwargs.get("isolated_first_frame", False)
108
+ self.isolated_last_frame = kwargs.get("isolated_last_frame", False)
109
+ self.isolated_key_frame = kwargs.get("isolated_key_frame", False)
110
+
111
+ self.encoder_tiling = kwargs.get("encoder_tiling", False)
112
+ self.decoder_tiling = kwargs.get("decoder_tiling", False)
113
+ self.stack_tiling = kwargs.get("stack_tiling", False)
114
+ self.tile_size = kwargs.get("tile_size", 256)
115
+ self.tile_overlap_min = kwargs.get("tile_overlap_min", 64)
116
+ self.decoder_tile_size = kwargs.get("decoder_tile_size", self.tile_size)
117
+ self.decoder_tile_overlap_min = kwargs.get("decoder_tile_overlap_min", self.tile_overlap_min)
118
+ self.latent_patch_size = kwargs.get("latent_patch_size", 1)
119
+ self.crop_mode = kwargs.get("crop_mode", "top_left")
120
+ self.pixel_norm_type = kwargs.get("pixel_norm_type", "imagenet")
121
+
122
+ # spatial parallel mode
123
+ if hasattr(self, "_sp_initialized"):
124
+ if (
125
+ kwargs.get("chunk_dim", -1) != self.chunk_dim
126
+ or kwargs.get("encoder_parallel", False) != self.encoder_parallel
127
+ or kwargs.get("decoder_parallel", False) != self.decoder_parallel
128
+ or kwargs.get("parallel_tiling", False) != self.parallel_tiling
129
+ ):
130
+ logger.warning(
131
+ "Do not support changing parallel schema after initialization"
132
+ )
133
+ else:
134
+ self.chunk_dim = kwargs.get("chunk_dim", -1)
135
+ self.encoder_parallel = kwargs.get("encoder_parallel", False)
136
+ self.decoder_parallel = kwargs.get("decoder_parallel", False)
137
+ self.parallel_tiling = kwargs.get("parallel_tiling", False)
138
+ self._sp_initialized = True
139
+
140
+ processor_kwargs = {
141
+ "vae_ratio": self.vae_ratio,
142
+ "vae_ratio_t": self.vae_ratio_t,
143
+ "clip_length": self.clip_length,
144
+ "frame_overlap": self.frame_overlap,
145
+ "token_overlap": self.token_overlap,
146
+ "tokens_chunk_size": self.tokens_chunk_size,
147
+ "isolated_last_frame": self.isolated_last_frame,
148
+ "latent_patch_size": self.latent_patch_size,
149
+ "crop_mode": self.crop_mode,
150
+ "pixel_norm_type": self.pixel_norm_type,
151
+ "transform": self.transform,
152
+ "transform_rev": self.transform_rev,
153
+ "use_3d_conv": self.use_3d_conv,
154
+ }
155
+ if hasattr(self, "processor"):
156
+ for key, value in processor_kwargs.items():
157
+ setattr(self.processor, key, value)
158
+ else:
159
+ self.processor = VAEProcessor(**processor_kwargs)
160
+
161
+ def perform_input_slice(self, x, chunk_size_stride=1):
162
+ state = get_parallel_state()
163
+ sp_rank = state["sp_rank"]
164
+ sp_size = state["sp_size"]
165
+
166
+ total_size = x.shape[self.chunk_dim]
167
+ units = total_size // chunk_size_stride
168
+ base_units = units // sp_size
169
+ remainder_units = units % sp_size
170
+ if sp_rank < remainder_units:
171
+ start_units = sp_rank * (base_units + 1)
172
+ end_units = start_units + base_units + 1
173
+ else:
174
+ start_units = sp_rank * base_units + remainder_units
175
+ end_units = start_units + base_units
176
+ start = start_units * chunk_size_stride
177
+ end = end_units * chunk_size_stride
178
+
179
+ slice_indices = [slice(None)] * x.ndim
180
+ slice_indices[self.chunk_dim] = slice(start, end)
181
+ x = x[tuple(slice_indices)].contiguous()
182
+ return x
183
+
184
+ def perform_output_concat(self, x):
185
+ sp_process_group = get_parallel_state()["sp_process_group"]
186
+ gathered = all_gather_var_shape(x, group=sp_process_group)
187
+ x = torch.cat(gathered, dim=self.chunk_dim)
188
+ return x
189
+
190
+
191
+
192
+ def split_tiles(self, input_len, is_decoder=False):
193
+ tile_size = self.decoder_tile_size if is_decoder else self.tile_size
194
+ tile_overlap_min = self.decoder_tile_overlap_min if is_decoder else self.tile_overlap_min
195
+
196
+ if tile_size >= input_len:
197
+ return [0], [input_len], []
198
+
199
+ N = math.ceil(input_len / tile_size)
200
+ while True:
201
+ overlaps = [tile_overlap_min] * (N - 1)
202
+ remaining = tile_size * N - sum(overlaps) - input_len
203
+
204
+ if remaining < 0:
205
+ N += 1
206
+ else:
207
+ break
208
+
209
+ remaining_units = remaining // self.vae_ratio
210
+ for i in range(remaining_units):
211
+ overlaps[i % (N - 1)] += self.vae_ratio
212
+
213
+ tile_start_idx = [0]
214
+ for i in range(N - 1):
215
+ tile_start_idx.append(tile_start_idx[-1] + tile_size - overlaps[i])
216
+
217
+ tile_len = [tile_size] * N
218
+ return tile_start_idx, tile_len, overlaps
219
+
220
+ def blend(
221
+ self, a: torch.Tensor, b: torch.Tensor, blend_extent: int, dim: int
222
+ ) -> torch.Tensor:
223
+ blend_extent = min(a.shape[dim], b.shape[dim], blend_extent)
224
+
225
+ positions = torch.arange(blend_extent, device=b.device, dtype=b.dtype)
226
+ weight_a = 1 - positions / blend_extent
227
+ weight_b = positions / blend_extent
228
+
229
+ shape = [1] * a.ndim
230
+ shape[dim] = blend_extent
231
+ weight_a = weight_a.view(shape)
232
+ weight_b = weight_b.view(shape)
233
+
234
+ slice_a = [slice(None)] * a.ndim
235
+ slice_a[dim] = slice(-blend_extent, None)
236
+ a_overlap = a[tuple(slice_a)]
237
+
238
+ slice_b = [slice(None)] * b.ndim
239
+ slice_b[dim] = slice(0, blend_extent)
240
+ b_overlap = b[tuple(slice_b)]
241
+
242
+ blended = a_overlap * weight_a + b_overlap * weight_b
243
+
244
+ if blend_extent < b.shape[dim]:
245
+ slice_b_rest = [slice(None)] * b.ndim
246
+ slice_b_rest[dim] = slice(blend_extent, None)
247
+ b_rest = b[tuple(slice_b_rest)]
248
+ return torch.cat([blended, b_rest], dim=dim)
249
+ else:
250
+ return blended
251
+
252
+ def _all_gather_tiled_results(self, tasks, num_tiles):
253
+ state = get_parallel_state()
254
+ group = state["sp_process_group"]
255
+ sp_size = state["sp_size"]
256
+ sp_rank = state["sp_rank"]
257
+
258
+ if not tasks:
259
+ raise ValueError(f"Found empty tasks on sp rank {sp_rank}")
260
+
261
+ stacked = torch.stack(tasks, dim=0)
262
+ gathered = all_gather_var_shape(stacked, group=group)
263
+
264
+ results = [None] * num_tiles
265
+ for rank, rank_tensors in enumerate(gathered):
266
+ num_rank_tasks = rank_tensors.shape[0]
267
+ for k in range(num_rank_tasks):
268
+ global_idx = k * sp_size + rank
269
+ if global_idx >= num_tiles:
270
+ break
271
+ results[global_idx] = rank_tensors[k]
272
+
273
+ return results
274
+
275
+ def _local_tile_indices(self, num_tiles, sp_rank, sp_size):
276
+ return list(range(sp_rank, num_tiles, sp_size))
277
+
278
+ def _run_tile_tasks(self, tiles, tile_indices, forward_fn, stack_tiling, cls_agg=None):
279
+ if stack_tiling and tile_indices:
280
+ sample_batch_size = tiles[0].shape[0]
281
+ tile_batch = torch.cat([tiles[idx] for idx in tile_indices], dim=0)
282
+ output_batch = forward_fn(tile_batch)
283
+ output_tiles = output_batch.unflatten(
284
+ 0, (len(tile_indices), sample_batch_size)
285
+ ).unbind(dim=0)
286
+ if cls_agg is not None:
287
+ cls_agg.collect_stacked(len(tile_indices), sample_batch_size)
288
+ return list(output_tiles)
289
+
290
+ tasks = []
291
+ for idx in tile_indices:
292
+ tasks.append(forward_fn(tiles[idx]))
293
+ if cls_agg is not None:
294
+ cls_agg.collect()
295
+ return tasks
296
+
297
+ def tiled_encode(self, x):
298
+ if self.parallel_tiling: # Fast online encoding for large videos
299
+ state = get_parallel_state()
300
+ sp_rank = state["sp_rank"]
301
+ sp_size = state["sp_size"]
302
+ else:
303
+ sp_rank, sp_size = 0, 1
304
+
305
+ height, width = x.shape[-2], x.shape[-1]
306
+ y_idx, y_len, y_overlap = self.split_tiles(height, False)
307
+ x_idx, x_len, x_overlap = self.split_tiles(width, False)
308
+
309
+ i_max, j_max = len(y_idx), len(x_idx)
310
+ num_tiles = i_max * j_max
311
+
312
+ x_tiles = []
313
+ for i, (i_pos, i_len) in enumerate(zip(y_idx, y_len)):
314
+ for j, (j_pos, j_len) in enumerate(zip(x_idx, x_len)):
315
+ tile = x[..., i_pos : i_pos + i_len, j_pos : j_pos + j_len]
316
+ x_tiles.append(tile)
317
+
318
+ with ClsTokenAggregator(self) as agg:
319
+ local_tile_indices = self._local_tile_indices(num_tiles, sp_rank, sp_size)
320
+ stack_tiling = self.stack_tiling and not (
321
+ self.training and getattr(self.encoder, "mask_enabled", False)
322
+ )
323
+ encoded_tasks = self._run_tile_tasks(
324
+ x_tiles, local_tile_indices, self.encode, stack_tiling, agg
325
+ )
326
+
327
+ if sp_size > 1:
328
+ dist.barrier(group=get_parallel_state()["sp_process_group"])
329
+ all_encoded = self._all_gather_tiled_results(encoded_tasks, num_tiles)
330
+ if agg.cls_tokens:
331
+ agg.cls_tokens = self._all_gather_tiled_results(agg.cls_tokens, num_tiles)
332
+ else:
333
+ all_encoded = encoded_tasks
334
+
335
+ rows = [[None for _ in range(j_max)] for _ in range(i_max)]
336
+ for idx, encoded in enumerate(all_encoded):
337
+ i, j = idx // j_max, idx % j_max
338
+ rows[i][j] = encoded.to(x.device)
339
+
340
+ latent_y_overlap = [
341
+ tile_overlap // self.vae_ratio for tile_overlap in y_overlap
342
+ ]
343
+ latent_x_overlap = [
344
+ tile_overlap // self.vae_ratio for tile_overlap in x_overlap
345
+ ]
346
+
347
+ result_rows = []
348
+ for i, row in enumerate(rows):
349
+ result_row = []
350
+ for j, tile in enumerate(row):
351
+ if i > 0:
352
+ tile = self.blend(rows[i - 1][j], tile, latent_y_overlap[i - 1], dim=-2)
353
+ if j > 0:
354
+ tile = self.blend(row[j - 1], tile, latent_x_overlap[j - 1], dim=-1)
355
+ if i < len(rows) - 1:
356
+ tile = tile[..., : -latent_y_overlap[i], :]
357
+ if j < len(row) - 1:
358
+ tile = tile[..., :, : -latent_x_overlap[j]]
359
+ result_row.append(tile)
360
+ result_rows.append(torch.cat(result_row, dim=-1))
361
+ z = torch.cat(result_rows, dim=-2)
362
+
363
+ return z
364
+
365
+ def tiled_decode(self, z):
366
+ if self.parallel_tiling: # Fast online decoding for large videos
367
+ state = get_parallel_state()
368
+ sp_rank = state["sp_rank"]
369
+ sp_size = state["sp_size"]
370
+ else:
371
+ sp_rank, sp_size = 0, 1
372
+
373
+ height, width = (
374
+ z.shape[-2] * self.vae_ratio,
375
+ z.shape[-1] * self.vae_ratio,
376
+ )
377
+ y_idx, y_len, y_overlap = self.split_tiles(height, True)
378
+ x_idx, x_len, x_overlap = self.split_tiles(width, True)
379
+
380
+ i_max, j_max = len(y_idx), len(x_idx)
381
+ num_tiles = i_max * j_max
382
+
383
+ z_tiles = []
384
+ for i, (i_pos, i_len) in enumerate(zip(y_idx, y_len)):
385
+ i_pos, i_len = (
386
+ i_pos // self.vae_ratio,
387
+ i_len // self.vae_ratio,
388
+ )
389
+ for j, (j_pos, j_len) in enumerate(zip(x_idx, x_len)):
390
+ j_pos, j_len = (j_pos // self.vae_ratio, j_len // self.vae_ratio)
391
+ tile = z[..., i_pos : i_pos + i_len, j_pos : j_pos + j_len]
392
+ z_tiles.append(tile)
393
+
394
+ local_tile_indices = self._local_tile_indices(num_tiles, sp_rank, sp_size)
395
+ stack_tiling = self.stack_tiling and not (
396
+ self.training and getattr(self.decoder, "mask_enabled", False)
397
+ )
398
+ decoded_tasks = self._run_tile_tasks(
399
+ z_tiles, local_tile_indices, self.decode, stack_tiling
400
+ )
401
+
402
+ if sp_size > 1:
403
+ dist.barrier(group=get_parallel_state()["sp_process_group"])
404
+ all_decoded = self._all_gather_tiled_results(decoded_tasks, num_tiles)
405
+ else:
406
+ all_decoded = decoded_tasks
407
+
408
+
409
+ rows = [[None for _ in range(j_max)] for _ in range(i_max)]
410
+ for idx, decoded in enumerate(all_decoded):
411
+ i, j = idx // j_max, idx % j_max
412
+ rows[i][j] = decoded.to(z.device)
413
+
414
+ result_rows = []
415
+ for i, row in enumerate(rows):
416
+ result_row = []
417
+ for j, tile in enumerate(row):
418
+ if i > 0:
419
+ tile = self.blend(rows[i - 1][j], tile, y_overlap[i - 1], dim=-2)
420
+ if j > 0:
421
+ tile = self.blend(row[j - 1], tile, x_overlap[j - 1], dim=-1)
422
+ if i < len(rows) - 1:
423
+ tile = tile[..., : -y_overlap[i], :]
424
+ if j < len(row) - 1:
425
+ tile = tile[..., :, : -x_overlap[j]]
426
+ result_row.append(tile)
427
+ result_rows.append(torch.cat(result_row, dim=-1))
428
+ dec = torch.cat(result_rows, dim=-2)
429
+ return dec
430
+
431
+ def _adaptive_encode(self, x):
432
+ if self.encoder_tiling:
433
+ return self.tiled_encode(x)
434
+ else:
435
+ return self.encode(x)
436
+
437
+ def _adaptive_decode(self, z):
438
+ if self.decoder_tiling:
439
+ return self.tiled_decode(z)
440
+ else:
441
+ return self.decode(z)
442
+
443
+ def trim_code(self, z, target_codes):
444
+ if target_codes < z.shape[2]:
445
+ if self.causal_encoder:
446
+ z = z[:, :, -target_codes:, :, :]
447
+ else:
448
+ start_frame = (z.shape[2] - target_codes) // 2
449
+ z = z[:, :, start_frame : start_frame + target_codes, :, :]
450
+ return z
451
+
452
+ def trim_output(self, dec, target_frames):
453
+ if target_frames < dec.shape[2]:
454
+ if self.causal_encoder: # This is defined by encoder, not decoder
455
+ dec = dec[:, :, -target_frames:, :, :]
456
+ else:
457
+ start_frame = (dec.shape[2] - target_frames) // 2
458
+ dec = dec[:, :, start_frame : start_frame + target_frames, :, :]
459
+ return dec
460
+
461
+ def encode_temporal(self, x):
462
+ offset_frame = 1 if self.isolated_first_frame and self.frame_pre_padding == 0 else 0
463
+
464
+ if x.shape[2] % self.clip_length != offset_frame:
465
+ pad_size = (offset_frame - x.shape[2]) % self.clip_length
466
+ pad_frames = x[:, :, -1:].repeat(1, 1, pad_size, 1, 1)
467
+ x = torch.cat([x, pad_frames], dim=2)
468
+
469
+ num_chunks = (x.shape[2] - offset_frame) // self.clip_length
470
+
471
+ z_list = []
472
+ for i in range(num_chunks):
473
+ start_idx = i * self.clip_length + offset_frame
474
+ end_idx = (i + 1) * self.clip_length + offset_frame
475
+ clip_x = x[:, :, start_idx:end_idx, :, :]
476
+
477
+ if self.isolated_key_frame:
478
+ key_frame = clip_x[:, :, :1, :, :]
479
+ z_key = self._adaptive_encode(key_frame)
480
+
481
+ if clip_x.shape[2] > 1:
482
+ video_frames = clip_x[:, :, 1:, :, :]
483
+ z_video = self._adaptive_encode(video_frames)
484
+ z = torch.cat([z_key, z_video], dim=2)
485
+ else:
486
+ z = z_key
487
+ else:
488
+ z = self._adaptive_encode(clip_x)
489
+
490
+ z_list.append(z)
491
+
492
+ z = torch.cat(z_list, dim=2)
493
+ if self.token_drop > 0:
494
+ z = z[:, :, : -self.token_drop]
495
+
496
+ if self.isolated_first_frame:
497
+ input_first_frame = x[:, :, :1, :, :]
498
+ z_first_frame = self._adaptive_encode(input_first_frame)
499
+
500
+ if self.frame_pre_padding == 0:
501
+ z = torch.cat([z_first_frame, z], dim=2)
502
+ else:
503
+ z = torch.cat([z_first_frame, z[:, :, 1:, :, :]], dim=2)
504
+
505
+ if self.isolated_last_frame:
506
+ frame_num = x.shape[2]
507
+ last_frame_idx = frame_num - self.frame_drop + offset_frame
508
+ input_last_frame = x[:, :, last_frame_idx : last_frame_idx + 1, :, :]
509
+ z_last_frame = self._adaptive_encode(input_last_frame)
510
+ z = torch.cat([z, z_last_frame], dim=2)
511
+
512
+ return z
513
+
514
+ def _decode_temporal_pad_frames(self, z, pad_tokens):
515
+ if pad_tokens <= 0:
516
+ return 0
517
+ intra_tail = self.clip_length % self.vae_ratio_t
518
+ if intra_tail == 0:
519
+ return int(pad_tokens) * int(self.vae_ratio_t)
520
+
521
+ z_len_before_pad = z.shape[2] - pad_tokens
522
+ return sum(
523
+ (
524
+ intra_tail
525
+ if (z_len_before_pad + k) % self.tokens_chunk_size == 0
526
+ else self.vae_ratio_t
527
+ )
528
+ for k in range(pad_tokens)
529
+ )
530
+
531
+ def _decode_temporal_output_frame_plan(self, z, z_head, z_tail, num_chunks, pad_tokens):
532
+ chunk_dec = self.tokens_chunk_size * self.vae_ratio_t
533
+ split_count = int(self.token_drop > 0) + 1
534
+ total_frames = 0
535
+ final_overlap_frames = 0
536
+
537
+ if z_head is not None:
538
+ total_frames += 1
539
+
540
+ for i in range(num_chunks):
541
+ t_start_idx = i * self.tokens_chunk_size
542
+ t_end_idx = t_start_idx + self.tokens_chunk_size + self.token_overlap
543
+ clip_token_len = max(0, min(t_end_idx, z.shape[2]) - min(t_start_idx, z.shape[2]))
544
+ if i == 0 and z_head is not None:
545
+ clip_token_len += z_head.shape[2]
546
+ if i == num_chunks - 1 and z_tail is not None:
547
+ clip_token_len += z_tail.shape[2]
548
+
549
+ clip_frame_len = clip_token_len * self.vae_ratio_t
550
+ if i == 0 and z_head is not None:
551
+ clip_frame_len = max(0, clip_frame_len - self.vae_ratio_t)
552
+ if i == num_chunks - 1 and z_tail is not None:
553
+ clip_frame_len = max(0, clip_frame_len - self.vae_ratio_t)
554
+
555
+ for j in range(split_count):
556
+ f_start_idx = j * chunk_dec
557
+ f_end_idx = min(f_start_idx + chunk_dec, clip_frame_len)
558
+ chunk_frames = max(0, f_end_idx - f_start_idx - self.frame_pre_padding)
559
+ if j == 0:
560
+ total_frames += chunk_frames
561
+ else:
562
+ final_overlap_frames = chunk_frames
563
+
564
+ total_frames += final_overlap_frames
565
+ if z_tail is not None:
566
+ total_frames += 1
567
+
568
+ pad_frames = self._decode_temporal_pad_frames(z, pad_tokens)
569
+ return int(total_frames), int(pad_frames), int(total_frames - pad_frames)
570
+
571
+ def _decode_temporal_streaming(self, z, z_head, z_tail, num_chunks, pad_tokens, temporal_cat_dtype):
572
+ total_frames, pad_frames, output_frames = self._decode_temporal_output_frame_plan(
573
+ z, z_head, z_tail, num_chunks, pad_tokens
574
+ )
575
+ if output_frames <= 0:
576
+ raise ValueError(
577
+ f"decode_temporal streaming planned non-positive output_frames={output_frames} "
578
+ f"total_frames={total_frames} pad_frames={pad_frames}"
579
+ )
580
+
581
+
582
+ chunk_dec = self.tokens_chunk_size * self.vae_ratio_t
583
+ split_count = int(self.token_drop > 0) + 1
584
+ dec = None
585
+ dec_overlap = None
586
+ write_pos = 0
587
+ logical_frames = 0
588
+ dropped_frames = 0
589
+ decoded_count = 0
590
+
591
+ def write_part(part):
592
+ nonlocal dec, write_pos, logical_frames, dropped_frames
593
+ part_frames = int(part.shape[2])
594
+ if part_frames <= 0:
595
+ return
596
+ logical_frames += part_frames
597
+ if dec is None:
598
+ out_shape = list(part.shape)
599
+ out_shape[2] = output_frames
600
+ dec = torch.empty(out_shape, dtype=part.dtype, device=part.device)
601
+
602
+ remaining = int(dec.shape[2]) - write_pos
603
+ copy_frames = min(part_frames, max(0, remaining))
604
+ if copy_frames > 0:
605
+ dec[:, :, write_pos : write_pos + copy_frames, :, :].copy_(
606
+ part[:, :, :copy_frames, :, :]
607
+ )
608
+ write_pos += copy_frames
609
+ dropped_frames += part_frames - copy_frames
610
+
611
+ for i in range(num_chunks):
612
+ t_start_idx = i * self.tokens_chunk_size
613
+ t_end_idx = t_start_idx + self.tokens_chunk_size + self.token_overlap
614
+ clip_z = z[:, :, t_start_idx:t_end_idx, :, :]
615
+
616
+ if i == 0 and z_head is not None:
617
+ clip_z = torch.cat([z_head, clip_z], dim=2)
618
+
619
+ if i == num_chunks - 1 and z_tail is not None:
620
+ clip_z = torch.cat([clip_z, z_tail], dim=2)
621
+
622
+ clip_dec = self._adaptive_decode(clip_z)
623
+ decoded_count += 1
624
+ if temporal_cat_dtype is not None and clip_dec.dtype != temporal_cat_dtype:
625
+ clip_dec = clip_dec.to(temporal_cat_dtype)
626
+ if clip_dec.device != z.device:
627
+ clip_dec = clip_dec.to(z.device)
628
+
629
+
630
+ dec_tail = None
631
+ if i == 0 and z_head is not None:
632
+ write_part(clip_dec[:, :, self.vae_ratio_t - 1 : self.vae_ratio_t, :, :])
633
+ clip_dec = clip_dec[:, :, self.vae_ratio_t :, :, :]
634
+
635
+ if i == num_chunks - 1 and z_tail is not None:
636
+ dec_tail = clip_dec[:, :, -1:, :, :]
637
+ clip_dec = clip_dec[:, :, : -self.vae_ratio_t, :, :]
638
+
639
+ for j in range(split_count):
640
+ f_start_idx = j * chunk_dec
641
+ f_end_idx = min(f_start_idx + chunk_dec, clip_dec.shape[2])
642
+ clip_dec_chunk = clip_dec[:, :, f_start_idx:f_end_idx, :, :]
643
+ clip_dec_chunk = clip_dec_chunk[:, :, self.frame_pre_padding :, :, :]
644
+
645
+ if j == 0:
646
+ if dec_overlap is not None:
647
+ clip_dec_chunk = self.blend(
648
+ dec_overlap, clip_dec_chunk, self.frame_overlap, dim=-3
649
+ )
650
+ dec_overlap = None
651
+ write_part(clip_dec_chunk)
652
+ else:
653
+ # Break the view's reference to the full decoded clip so earlier
654
+ # temporal chunks can be released before the final output exists.
655
+ dec_overlap = clip_dec_chunk.contiguous()
656
+
657
+ if i == num_chunks - 1:
658
+ if dec_overlap is not None:
659
+ write_part(dec_overlap)
660
+ dec_overlap = None
661
+ if dec_tail is not None:
662
+ write_part(dec_tail)
663
+
664
+ del clip_dec, clip_z
665
+
666
+ if dec is None:
667
+ raise RuntimeError("decode_temporal streaming produced no output tensor")
668
+ if logical_frames != total_frames or dropped_frames != pad_frames or write_pos != output_frames:
669
+ raise RuntimeError(
670
+ "decode_temporal streaming frame plan mismatch: "
671
+ f"logical_frames={logical_frames} total_frames={total_frames} "
672
+ f"dropped_frames={dropped_frames} pad_frames={pad_frames} "
673
+ f"write_pos={write_pos} output_frames={output_frames}"
674
+ )
675
+
676
+ return dec
677
+
678
+ def decode_temporal(self, z):
679
+ chunk_dec = self.tokens_chunk_size * self.vae_ratio_t
680
+
681
+ isolated_token_num = 0
682
+ if self.isolated_first_frame and self.frame_pre_padding == 0:
683
+ isolated_token_num = isolated_token_num + 1
684
+ if self.isolated_last_frame:
685
+ isolated_token_num = isolated_token_num + 1
686
+
687
+ pseudo_total_tokens = z.shape[2] - isolated_token_num + self.token_drop
688
+
689
+ pad_tokens = 0
690
+ remainder = pseudo_total_tokens % self.tokens_chunk_size
691
+ if remainder != 0:
692
+ if self.training:
693
+ raise ValueError(f"Temporal token length {z.shape[2]} is wrong!")
694
+ else:
695
+ pad_tokens = self.tokens_chunk_size - remainder
696
+ pseudo_total_tokens = pseudo_total_tokens + pad_tokens
697
+
698
+ pseudo_num_chunks = pseudo_total_tokens // self.tokens_chunk_size
699
+ num_chunks = pseudo_num_chunks - int(self.token_drop > 0)
700
+
701
+ z_head = None
702
+ if self.isolated_first_frame and self.frame_pre_padding == 0:
703
+ z_head = z[:, :, :1, :, :]
704
+ z = z[:, :, 1:, :, :]
705
+
706
+ z_tail = None
707
+ if self.isolated_last_frame:
708
+ z_tail = z[:, :, -1:, :, :]
709
+ z = z[:, :, :-1, :, :]
710
+
711
+ if pad_tokens > 0:
712
+ pad_z = z[:, :, -1:, :, :].repeat(1, 1, pad_tokens, 1, 1)
713
+ z = torch.cat([z, pad_z], dim=2)
714
+
715
+ temporal_cat_dtype = _resolve_temporal_cat_dtype()
716
+ if not self.training and _resolve_temporal_stream_cat():
717
+ return self._decode_temporal_streaming(
718
+ z, z_head, z_tail, num_chunks, pad_tokens, temporal_cat_dtype
719
+ )
720
+
721
+ decoded_tasks = []
722
+ for i in range(num_chunks):
723
+ t_start_idx = i * self.tokens_chunk_size
724
+ t_end_idx = t_start_idx + self.tokens_chunk_size + self.token_overlap
725
+ clip_z = z[:, :, t_start_idx:t_end_idx, :, :]
726
+
727
+ if i == 0 and z_head is not None:
728
+ clip_z = torch.cat([z_head, clip_z], dim=2)
729
+
730
+ if i == num_chunks - 1 and z_tail is not None:
731
+ clip_z = torch.cat([clip_z, z_tail], dim=2)
732
+
733
+ clip_dec = self._adaptive_decode(clip_z)
734
+ if temporal_cat_dtype is not None and clip_dec.dtype != temporal_cat_dtype:
735
+ clip_dec = clip_dec.to(temporal_cat_dtype)
736
+
737
+ decoded_tasks.append((i, clip_dec))
738
+
739
+ clip_dec_list = [clip_dec.to(z.device) for _, clip_dec in decoded_tasks]
740
+
741
+ dec_list = []
742
+ dec_overlap = None
743
+
744
+ dec_head = None
745
+ if z_head is not None:
746
+ dec_head = clip_dec_list[0][:, :, self.vae_ratio_t - 1 : self.vae_ratio_t, :, :]
747
+ clip_dec_list[0] = clip_dec_list[0][:, :, self.vae_ratio_t :, :, :]
748
+
749
+ dec_tail = None
750
+ if z_tail is not None:
751
+ dec_tail = clip_dec_list[-1][:, :, -1:, :, :]
752
+ clip_dec_list[-1] = clip_dec_list[-1][:, :, : -self.vae_ratio_t, :, :]
753
+
754
+ if dec_head is not None:
755
+ dec_list.append(dec_head)
756
+
757
+ for i in range(num_chunks):
758
+ for j in range(int(self.token_drop > 0) + 1):
759
+ clip_dec = clip_dec_list[i]
760
+
761
+ f_start_idx = j * chunk_dec
762
+ f_end_idx = min(f_start_idx + chunk_dec, clip_dec.shape[2])
763
+ clip_dec_chunk = clip_dec[:, :, f_start_idx:f_end_idx, :, :]
764
+ clip_dec_chunk = clip_dec_chunk[:, :, self.frame_pre_padding :, :, :]
765
+
766
+ if j == 0:
767
+ if dec_overlap is not None:
768
+ clip_dec_chunk = self.blend(
769
+ dec_overlap, clip_dec_chunk, self.frame_overlap, dim=-3
770
+ )
771
+ dec_list.append(clip_dec_chunk)
772
+ else:
773
+ dec_overlap = clip_dec_chunk
774
+
775
+ if dec_overlap is not None:
776
+ dec_list.append(dec_overlap)
777
+
778
+ if dec_tail is not None:
779
+ dec_list.append(dec_tail)
780
+
781
+
782
+ dec = torch.cat(dec_list, dim=2)
783
+
784
+ pad_frames = self._decode_temporal_pad_frames(z, pad_tokens)
785
+ if pad_frames > 0:
786
+ dec = dec[:, :, :-pad_frames, :, :]
787
+
788
+ return dec
789
+
790
+ def decode_base(self, z, frame_num=None, process_image=False):
791
+ if process_image or not self.use_3d_conv:
792
+ if not self.use_3d_conv and z.ndim == 5:
793
+ z = z.squeeze(2)
794
+
795
+ recon = self._adaptive_decode(z)
796
+ else:
797
+ recon = self.decode_temporal(z)
798
+
799
+ if self.use_3d_conv:
800
+ if frame_num is not None:
801
+ target_frames = frame_num
802
+ else:
803
+ target_frames = recon.shape[2]
804
+
805
+ recon = self.trim_output(recon, target_frames)
806
+ if process_image:
807
+ recon = recon.squeeze(2)
808
+
809
+ return recon
810
+
811
+ #########################################################
812
+ # freeze_scope is retained from the training codebase: in this
813
+ # inference-only bundle (self.training is always False) it simply
814
+ # provides the no_grad() context used by encode()/decode().
815
+ #########################################################
816
+
817
+
818
+ def freeze_scope(self, module_name):
819
+ if not self.training:
820
+ return torch.no_grad()
821
+
822
+ if_freeze = module_name in self.fix_modules
823
+ if if_freeze:
824
+ return torch.no_grad()
825
+ else:
826
+ return nullcontext()
827
+
828
+
829
+
830
+
831
+
832
+
833
+
834
+
835
+ #########################################################
836
+ # following methods are for inference
837
+ #########################################################
838
+
839
+ @torch.no_grad()
840
+ def encode_images(
841
+ self,
842
+ images: Union[List[np.ndarray], List[torch.Tensor]],
843
+ transform_input: bool = False,
844
+ use_fp16_latent: bool = False,
845
+ verbose: bool = False,
846
+ ) -> List[torch.Tensor]:
847
+ """encode images into latents
848
+
849
+ Args:
850
+ images (Union[List[np.ndarray], List[torch.Tensor]]):
851
+ List of images, single input will be wrapped in a list.
852
+ If input is a list of np.ndarray, it should be in shape B * (H, W, 3), dtype uint8.
853
+ If input is a list of torch.Tensor, it should be in shape B * (3, H, W), dtype float32.
854
+ transform_input (bool, optional):
855
+ Whether to transform input using ImageNet std/mean. Defaults to False.
856
+ If input is a list of np.ndarray, it will always be set to True.
857
+ use_fp16_latent (bool, optional):
858
+ Whether to use fp16 latent. Defaults to False.
859
+ verbose (bool, optional):
860
+ Whether to print debug information. Defaults to False.
861
+
862
+ Returns:
863
+ List[torch.Tensor]:
864
+ List of image latents.
865
+ If self.use_3d_conv is True, it should be in shape B * (D, 1, H', W').
866
+ Otherwise, it should be in shape B * (D, H', W').
867
+ """
868
+
869
+ images = self.processor._ensure_list(images)
870
+
871
+ if isinstance(images[0], Image.Image):
872
+ images = [np.array(image) for image in images]
873
+
874
+ if isinstance(images[0], np.ndarray):
875
+ device = next(self.parameters()).device
876
+ images = self.processor.convert_numpy_to_tensor(images, device)
877
+ images = torch.split(images, 1, dim=0)
878
+ transform_input = True
879
+
880
+ if transform_input:
881
+ images = [
882
+ image.unsqueeze(0) if image.ndim == 3 else image for image in images
883
+ ]
884
+ images = [self.processor.transform_tensor(image) for image in images]
885
+
886
+ prepared = []
887
+ for image_tensor in images:
888
+ if image_tensor.ndim == 3:
889
+ image_tensor = image_tensor.unsqueeze(0)
890
+ _, _, h, w = image_tensor.shape
891
+ new_h, new_w = self.processor._align_to_total_patch_size(h, w)
892
+ image_tensor = self.processor._crop_to_align(image_tensor, new_h, new_w)
893
+ prepared.append(image_tensor)
894
+
895
+ if len(prepared) > 1 and len(set(t.shape for t in prepared)) == 1:
896
+ stacked = torch.cat(prepared, dim=0)
897
+ if verbose:
898
+ logger.info(f"batch encode input shape {tuple(stacked.shape)}")
899
+ all_latents = self.encode_base(stacked, True)
900
+ image_latents = [all_latents[i].contiguous() for i in range(all_latents.shape[0])]
901
+ else:
902
+ image_latents = []
903
+ for image_tensor in prepared:
904
+ if verbose:
905
+ logger.info(f"input shape {tuple(image_tensor.shape)}")
906
+ image_latent = self.encode_base(image_tensor, True)
907
+ image_latents.append(image_latent.squeeze(0).contiguous())
908
+
909
+ if use_fp16_latent:
910
+ image_latents = [lat.to(torch.float16) for lat in image_latents]
911
+
912
+ if verbose:
913
+ for lat in image_latents:
914
+ logger.info(f"image latent shape {tuple(lat.shape)}")
915
+
916
+ return image_latents
917
+
918
+ @torch.no_grad()
919
+ def encode_videos(
920
+ self,
921
+ videos: Union[List[np.ndarray], List[torch.Tensor]],
922
+ transform_input: bool = False,
923
+ use_fp16_latent: bool = False,
924
+ verbose: bool = False,
925
+ encode_prefix: bool = False,
926
+ ) -> List[torch.Tensor]:
927
+ """encode videos into latents
928
+
929
+ Args:
930
+ videos (Union[List[np.ndarray], List[torch.Tensor]]):
931
+ List of videos, single input will be wrapped in a list.
932
+ If input is a list of np.ndarray, it should be in shape B * (T, H, W, 3), dtype uint8.
933
+ If input is a list of torch.Tensor, it should be in shape B * (3, T, H, W), dtype float32.
934
+ transform_input (bool, optional):
935
+ Whether to transform input using ImageNet std/mean. Defaults to False.
936
+ If input is a list of np.ndarray, it will always be set to True.
937
+ use_fp16_latent (bool, optional):
938
+ Whether to use fp16 latent. Defaults to False.
939
+ verbose (bool, optional):
940
+ Whether to print debug information. Defaults to False.
941
+ encode_prefix (bool, optional):
942
+ Continuation (prefix) mode: prepend normalized
943
+ black frames to token alignment, append black frames to chunk
944
+ alignment, encode with token_drop disabled, then discard only
945
+ the trailing padding tokens. Returns both latents and leading
946
+ pad-frame counts. Defaults to False.
947
+
948
+ Returns:
949
+ List[torch.Tensor]:
950
+ List of video latents, shape B * (D, T', H', W').
951
+ With encode_prefix=True, returns
952
+ (List[torch.Tensor], List[int]).
953
+ """
954
+
955
+ videos = self.processor._ensure_list(videos)
956
+
957
+ if isinstance(videos[0], np.ndarray):
958
+ device = next(self.parameters()).device
959
+ videos = [self.processor.convert_numpy_to_tensor(video, device) for video in videos]
960
+ transform_input = True
961
+
962
+ if transform_input:
963
+ videos = [self.processor.transform_tensor(video) for video in videos]
964
+ videos = [video.transpose(0, 1) for video in videos]
965
+
966
+ if encode_prefix:
967
+ if self.isolated_last_frame:
968
+ raise ValueError(
969
+ "encode_prefix does not support isolated_last_frame"
970
+ )
971
+
972
+ video_latents = []
973
+ prefix_pad_frames = []
974
+ for video in videos:
975
+ if video.ndim == 4:
976
+ video = video.unsqueeze(0)
977
+ _, _, _, h, w = video.shape
978
+ new_h, new_w = self.processor._align_to_total_patch_size(h, w)
979
+ video = self.processor._crop_to_align(
980
+ video, new_h, new_w, is_video=True
981
+ )
982
+
983
+ model_alignment = (
984
+ self.token_drop,
985
+ self.frame_drop,
986
+ self.token_overlap,
987
+ self.frame_overlap,
988
+ )
989
+ processor_alignment = (
990
+ self.processor.token_overlap,
991
+ self.processor.frame_overlap,
992
+ )
993
+ self.token_drop = 0
994
+ self.frame_drop = 0
995
+ self.token_overlap = 0
996
+ self.frame_overlap = 0
997
+ self.processor.token_overlap = 0
998
+ self.processor.frame_overlap = 0
999
+ try:
1000
+ orig_frames = video.shape[2]
1001
+ leading, trailing, drop_tokens = (
1002
+ self.processor.align_video_length_2pass(orig_frames)
1003
+ )
1004
+ _, _, _, cropped_h, cropped_w = video.shape
1005
+ if leading > 0:
1006
+ black = self.processor.transform(
1007
+ video.new_zeros(leading, 3, cropped_h, cropped_w)
1008
+ )
1009
+ black = black.unsqueeze(0).permute(0, 2, 1, 3, 4)
1010
+ video = torch.cat([black, video], dim=2)
1011
+ if trailing > 0:
1012
+ black = self.processor.transform(
1013
+ video.new_zeros(trailing, 3, cropped_h, cropped_w)
1014
+ )
1015
+ black = black.unsqueeze(0).permute(0, 2, 1, 3, 4)
1016
+ video = torch.cat([video, black], dim=2)
1017
+
1018
+ if verbose:
1019
+ logger.info(
1020
+ f"[encode_prefix] {orig_frames} frames -> "
1021
+ f"pad leading={leading}, trailing={trailing} -> "
1022
+ f"{video.shape[2]} frames"
1023
+ )
1024
+
1025
+ video_latent = self.encode_base(video, False)
1026
+ if drop_tokens > 0:
1027
+ video_latent = video_latent[:, :, :-drop_tokens, :, :]
1028
+ prefix_pad_frames.append(leading)
1029
+ finally:
1030
+ (
1031
+ self.token_drop,
1032
+ self.frame_drop,
1033
+ self.token_overlap,
1034
+ self.frame_overlap,
1035
+ ) = model_alignment
1036
+ (
1037
+ self.processor.token_overlap,
1038
+ self.processor.frame_overlap,
1039
+ ) = processor_alignment
1040
+
1041
+ video_latents.append(video_latent.squeeze(0).contiguous())
1042
+
1043
+ if use_fp16_latent:
1044
+ video_latents = [lat.to(torch.float16) for lat in video_latents]
1045
+ if verbose:
1046
+ for latent in video_latents:
1047
+ logger.info(f"video latent shape {tuple(latent.shape)}")
1048
+ return video_latents, prefix_pad_frames
1049
+
1050
+ prepared = []
1051
+ for video in videos:
1052
+ if video.ndim == 4:
1053
+ video = video.unsqueeze(0)
1054
+ used_frame_length = self.processor.get_suitable_video_length(video.shape[2], verbose)
1055
+ _, _, _, h, w = video.shape
1056
+ new_h, new_w = self.processor._align_to_total_patch_size(h, w)
1057
+ video = video[:, :, :used_frame_length, :, :]
1058
+ video = self.processor._crop_to_align(video, new_h, new_w, is_video=True)
1059
+ prepared.append(video)
1060
+
1061
+ if len(prepared) > 1 and len(set(t.shape for t in prepared)) == 1:
1062
+ stacked = torch.cat(prepared, dim=0)
1063
+ if verbose:
1064
+ logger.info(f"batch encode input shape {tuple(stacked.shape)}")
1065
+ all_latents = self.encode_base(stacked, False)
1066
+ video_latents = [all_latents[i].contiguous() for i in range(all_latents.shape[0])]
1067
+ else:
1068
+ video_latents = []
1069
+ for video in prepared:
1070
+ if verbose:
1071
+ logger.info(f"input shape {tuple(video.shape)}")
1072
+ video_latent = self.encode_base(video, False)
1073
+ video_latents.append(video_latent.squeeze(0).contiguous())
1074
+
1075
+ if use_fp16_latent:
1076
+ video_latents = [lat.to(torch.float16) for lat in video_latents]
1077
+
1078
+ if verbose:
1079
+ for lat in video_latents:
1080
+ logger.info(f"video latent shape {tuple(lat.shape)}")
1081
+
1082
+ return video_latents
1083
+
1084
+
1085
+
1086
+
1087
+ # ============================================================================
1088
+ # Legacy CNN VAE
1089
+ # ============================================================================
1090
+
1091
+
1092
+ class AutoencoderKLLegacy(AutoencoderKL):
1093
+ r"""
1094
+ A VAE model (legacy CNN-based) for encoding pixels into latents and decoding latent representations into pixels.
1095
+ """
1096
+
1097
+ @register_to_config
1098
+ def __init__(
1099
+ self,
1100
+ in_channels=3,
1101
+ out_ch=3,
1102
+ ch=128,
1103
+ embed_dim=16,
1104
+ z_channels=16,
1105
+ use_3d_conv=False,
1106
+ # cnn vae
1107
+ zq_ch_encoder=None,
1108
+ zq_ch_decoder=None,
1109
+ num_res_blocks=2,
1110
+ num_res_blocks_decoder=None,
1111
+ ch_mult=[1, 2, 2, 4, 4, 8],
1112
+ space_down=[2, 2, 2, 2, 1, 1],
1113
+ space_up=[1, 2, 2, 2, 2, 1],
1114
+ time_down=None,
1115
+ time_up=None,
1116
+ padding_mode="zeros",
1117
+ padding_mode_t=None,
1118
+ use_t_isolated_gn=False,
1119
+ causal_encoder=True,
1120
+ causal_decoder=True,
1121
+ use_vit_decoder=False,
1122
+ vit_decoder_kwargs=None,
1123
+ # stats
1124
+ shift_factor=0.0,
1125
+ scaling_factor=1.0,
1126
+ # pixel normalization
1127
+ pixel_norm_type="imagenet",
1128
+ # others
1129
+ **kwargs,
1130
+ ):
1131
+ ModelMixin.__init__(self) # NOTE: avoid wrong @register_to_config
1132
+
1133
+ if not use_3d_conv or not use_vit_decoder:
1134
+ raise NotImplementedError(
1135
+ "this release only supports use_3d_conv=True with use_vit_decoder=True"
1136
+ )
1137
+
1138
+ self.transform = get_normalize_transform(pixel_norm_type)
1139
+ self.transform_rev = get_denormalize_transform(pixel_norm_type)
1140
+
1141
+ self.use_3d_conv = use_3d_conv
1142
+ self.causal_encoder = causal_encoder
1143
+ self.causal_decoder = causal_decoder
1144
+ self.slidedec = self.causal_encoder and not self.causal_decoder
1145
+
1146
+ # some registered parameters for simplicity
1147
+ self.vae_ratio = int(np.cumprod(space_down)[-1])
1148
+ self.vae_ratio_t = int(np.cumprod(time_down)[-1]) if time_down else 1
1149
+ self.config["vae_ratio"] = self.vae_ratio
1150
+ self.config["vae_ratio_t"] = self.vae_ratio_t
1151
+
1152
+ # some registered parameters for inference and training
1153
+ self.setup_forward(**kwargs)
1154
+ self.setup_training(**kwargs)
1155
+
1156
+ # init encoder
1157
+ encoder_config = {
1158
+ "double_z": True,
1159
+ "z_channels": z_channels,
1160
+ "zq_ch": zq_ch_encoder,
1161
+ "in_channels": in_channels,
1162
+ "ch": ch,
1163
+ "num_res_blocks": num_res_blocks,
1164
+ "ch_mult": ch_mult,
1165
+ "space_down": space_down,
1166
+ "time_down": time_down,
1167
+ "padding_mode": padding_mode,
1168
+ "padding_mode_t": padding_mode_t,
1169
+ "causal": causal_encoder,
1170
+ "use_t_isolated_gn": use_t_isolated_gn,
1171
+ }
1172
+ self.encoder = EncoderFCN3D(**encoder_config)
1173
+
1174
+ # init pointwise quant/post_quant conv
1175
+ self.quant_conv = nn.Conv3d(z_channels * 2, 2 * embed_dim, 1)
1176
+ self.post_quant_conv = nn.Conv3d(embed_dim, z_channels, 1)
1177
+
1178
+ self.use_vit_decoder = use_vit_decoder
1179
+
1180
+ # init decoder
1181
+ vit_kwargs = {
1182
+ "patch_size": self.vae_ratio,
1183
+ "in_channels": z_channels,
1184
+ "out_channels": out_ch,
1185
+ **(vit_decoder_kwargs or {}),
1186
+ }
1187
+ vit_kwargs.setdefault("patch_size_t", self.vae_ratio_t)
1188
+ vit_kwargs.setdefault("t_causal", causal_decoder)
1189
+ self.decoder = ViT3DDecoder(**vit_kwargs)
1190
+
1191
+ apply_spatial_parallel(self.encoder, self.encoder_parallel, self.chunk_dim)
1192
+ apply_spatial_parallel(self.decoder, self.decoder_parallel, self.chunk_dim)
1193
+
1194
+ for module in set(self.fix_modules + self.frozen_modules):
1195
+ self._freeze_nested_module(module)
1196
+
1197
+ self.gradient_checkpointing = False
1198
+
1199
+ def encode(self, x):
1200
+ if self.encoder_parallel:
1201
+ x = self.perform_input_slice(x, self.vae_ratio)
1202
+
1203
+ with self.freeze_scope("encoder"):
1204
+ h = self.encoder(x)
1205
+
1206
+ with self.freeze_scope("quant_conv"):
1207
+ moments = self.quant_conv(h)
1208
+
1209
+ if self.encoder_parallel:
1210
+ moments = self.perform_output_concat(moments)
1211
+
1212
+ return moments
1213
+
1214
+ def decode(self, z):
1215
+ if self.decoder_parallel and not self.use_vit_decoder:
1216
+ z = self.perform_input_slice(z)
1217
+
1218
+ with self.freeze_scope("post_quant_conv"):
1219
+ z2 = self.post_quant_conv(z)
1220
+
1221
+ with self.freeze_scope("decoder"):
1222
+ if self.use_vit_decoder:
1223
+ dec = self.decoder(z2)
1224
+ else:
1225
+ dec = self.decoder(z2, z)
1226
+
1227
+ if self.decoder_parallel and not self.use_vit_decoder:
1228
+ dec = self.perform_output_concat(dec)
1229
+ return dec
1230
+
1231
+ def encode_base(self, input, process_image=False):
1232
+ if self.use_3d_conv and input.ndim == 4:
1233
+ input = input.unsqueeze(2)
1234
+
1235
+ if process_image or not self.use_3d_conv:
1236
+ moments = self._adaptive_encode(input)
1237
+ else:
1238
+ moments = self.encode_temporal(input)
1239
+
1240
+ z = DiagonalGaussianDistribution(moments).sample()
1241
+
1242
+ if process_image and self.use_3d_conv:
1243
+ z = self.trim_code(z, 1)
1244
+
1245
+ return z
1246
+
1247
+ #########################################################
1248
+ # training-related knobs kept only for checkpoint/config compatibility
1249
+ #########################################################
1250
+
1251
+ def setup_training(self, **kwargs):
1252
+ self.fix_modules = kwargs.get("fix_modules", [])
1253
+ self.frozen_modules = kwargs.get("frozen_modules", [])
1254
+
1255
+
1256
+
1257
+
1258
+
FL2VA/video_vae/minimax_h3_video_vae.py ADDED
@@ -0,0 +1,122 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Remote entry: self-contained MiniMax H3 visual VAE (3D CNN encoder + ViT3D decoder).
3
+ # Loaded via config.json:auto_map with trust_remote_code.
4
+ from __future__ import annotations
5
+
6
+ import json
7
+ from pathlib import Path
8
+
9
+ import safetensors.torch
10
+ import torch.nn as nn
11
+
12
+ # --- dependency manifest ---
13
+ # diffusers' dynamic-module loader only copies ONE level of relative
14
+ # imports into its cache; list every bundle module here so all files
15
+ # are copied, letting their own second-level imports resolve.
16
+ from .attention import Attention as _dep_attention # noqa: F401
17
+ from .base_module import FeedForward as _dep_base_module # noqa: F401
18
+ from .conv import SpatialParallelConv3d as _dep_conv # noqa: F401
19
+ from .flash import make_block_causal_mask_mod as _dep_flash # noqa: F401
20
+ from .func import create_token_ids as _dep_func # noqa: F401
21
+ from .klvae import AutoencoderKL as _dep_klvae # noqa: F401
22
+ from .norm import FusedGroupNorm3D as _dep_norm # noqa: F401
23
+ from .normalize import get_norm_constants as _dep_normalize # noqa: F401
24
+ from .parallel import get_parallel_state as _dep_parallel # noqa: F401
25
+ from .utils import apply_spatial_parallel as _dep_utils # noqa: F401
26
+ from .vae_cnn import EncoderFCN3D as _dep_vae_cnn # noqa: F401
27
+ from .vae_module import DiagonalGaussianDistribution as _dep_vae_module # noqa: F401
28
+ from .vae_processor import VAEProcessor as _dep_vae_processor # noqa: F401
29
+ from .vae_vit import ViTBase as _dep_vae_vit # noqa: F401
30
+ # --- end dependency manifest ---
31
+
32
+ from .klvae import AutoencoderKLLegacy
33
+ from .parallel import get_parallel_state
34
+
35
+ _SOURCE_CLASSES = {
36
+ "AutoencoderKLLegacy": AutoencoderKLLegacy,
37
+ }
38
+
39
+
40
+ def _ensure_vae_parallel_state() -> None:
41
+ """Seed the bundled VAE parallel state for single-process inference."""
42
+ state = get_parallel_state()
43
+ if not isinstance(state, dict):
44
+ raise TypeError("get_parallel_state() must return a dict")
45
+ if state:
46
+ return
47
+ state.update(
48
+ {
49
+ "group_size": 1,
50
+ "group_rank": 0,
51
+ "local_process_group": None,
52
+ "sp_size": 1,
53
+ "sp_rank": 0,
54
+ "sp_enabled": False,
55
+ "sp_process_group": None,
56
+ "tp_size": 1,
57
+ "tp_rank": 0,
58
+ }
59
+ )
60
+
61
+
62
+ class MiniMaxH3VideoVAE(nn.Module):
63
+ def __init__(self, model: nn.Module) -> None:
64
+ super().__init__()
65
+ self.model = model
66
+
67
+ @classmethod
68
+ def from_pretrained(cls, pretrained_model_name_or_path: str, **kwargs):
69
+ component_dir = Path(pretrained_model_name_or_path)
70
+ with (component_dir / "config.json").open("r", encoding="utf-8") as f:
71
+ config = json.load(f)
72
+ source_path = component_dir / config["source_path"]
73
+ source_class_name = config["source_class_name"]
74
+ if source_class_name not in _SOURCE_CLASSES:
75
+ raise ValueError(
76
+ f"unsupported source_class_name {source_class_name!r}; "
77
+ f"bundled: {sorted(_SOURCE_CLASSES)}"
78
+ )
79
+ source_cls = _SOURCE_CLASSES[source_class_name]
80
+ if "source_safetensors_path" not in config:
81
+ raise ValueError(
82
+ "source_safetensors_path is required; pickle checkpoints are "
83
+ "not supported"
84
+ )
85
+ weights_path = source_path / config["source_safetensors_path"]
86
+ if not weights_path.is_file():
87
+ raise FileNotFoundError(f"source weights not found: {weights_path}")
88
+ if bool(config["vae_parallel_tiling"]):
89
+ _ensure_vae_parallel_state()
90
+ load_kwargs = {
91
+ "clip_length": int(config["vae_clip_length"]),
92
+ "token_drop": int(config["vae_token_drop"]),
93
+ "encoder_tiling": int(config["vae_encoder_tiling"]),
94
+ "decoder_tiling": int(config["vae_decoder_tiling"]),
95
+ "parallel_tiling": int(config["vae_parallel_tiling"]),
96
+ "tile_size": int(config["vae_tile_size"]),
97
+ "tile_overlap_min": int(config["vae_tile_overlap_min"]),
98
+ "encoder_parallel": int(config["vae_encoder_parallel"]),
99
+ "decoder_parallel": int(config["vae_decoder_parallel"]),
100
+ "chunk_dim": int(config["vae_chunk_dim"]),
101
+ }
102
+ # Mirror diffusers ModelMixin.from_pretrained instantiation semantics
103
+ # (config-driven init via from_config) but load the state dict from an
104
+ # explicitly named safetensors file instead of the diffusers default
105
+ # weight filename.
106
+ source_config = source_cls.load_config(str(source_path))
107
+ model, _unused = source_cls.from_config(
108
+ source_config, return_unused_kwargs=True, **load_kwargs
109
+ )
110
+ state_dict = safetensors.torch.load_file(str(weights_path))
111
+ model.load_state_dict(state_dict, strict=True)
112
+ model.eval()
113
+ return cls(model)
114
+
115
+ def forward(self, *args, **kwargs):
116
+ return self.model(*args, **kwargs)
117
+
118
+ def __getattr__(self, name: str):
119
+ try:
120
+ return super().__getattr__(name)
121
+ except AttributeError:
122
+ return getattr(self.model, name)
FL2VA/video_vae/norm.py ADDED
@@ -0,0 +1,357 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Torch-native normalization for the MiniMax H3 visual VAE.
3
+ import math
4
+ import os
5
+
6
+ import torch
7
+ import torch.distributed as dist
8
+ import torch.nn as nn
9
+ import torch.nn.functional as F
10
+
11
+ from .conv import SpatialParallelConv3d
12
+ from .parallel import all_reduce, get_parallel_state
13
+
14
+
15
+ def _validate_activation(activation):
16
+ valid_activations = {"identity", "silu", "relu"}
17
+ if activation not in valid_activations:
18
+ raise ValueError(
19
+ f"Unsupported activation: {activation}. Supported: {valid_activations}"
20
+ )
21
+
22
+
23
+ def _apply_activation(x, activation):
24
+ _validate_activation(activation)
25
+ if activation == "identity":
26
+ return x
27
+ if activation == "silu":
28
+ return F.silu(x)
29
+ return F.relu(x)
30
+
31
+
32
+ def _merge_time_to_batch(x):
33
+ batch, channels, depth, height, width = x.shape
34
+ return (
35
+ x.permute(0, 2, 1, 3, 4)
36
+ .contiguous()
37
+ .view(batch * depth, channels, 1, height, width)
38
+ )
39
+
40
+
41
+ def _split_time_from_batch(x, batch):
42
+ batch_depth, channels, _, height, width = x.shape
43
+ depth = batch_depth // batch
44
+ return (
45
+ x.view(batch, depth, channels, height, width)
46
+ .permute(0, 2, 1, 3, 4)
47
+ .contiguous()
48
+ )
49
+
50
+
51
+ def fused_group_norm(x, num_groups, weight, bias, eps=1e-5, activation="silu"):
52
+ out = F.group_norm(x, num_groups, weight=weight, bias=bias, eps=eps)
53
+ return _apply_activation(out, activation)
54
+
55
+
56
+ def fused_spatial_norm(
57
+ f,
58
+ num_groups,
59
+ norm_weight,
60
+ norm_bias,
61
+ dynamic_scale,
62
+ dynamic_bias,
63
+ eps=1e-5,
64
+ activation="silu",
65
+ ):
66
+ norm_f = F.group_norm(
67
+ f,
68
+ num_groups,
69
+ weight=norm_weight,
70
+ bias=norm_bias,
71
+ eps=eps,
72
+ )
73
+ out = norm_f * dynamic_scale + dynamic_bias
74
+ return _apply_activation(out, activation)
75
+
76
+
77
+ class DummyAffine(torch.nn.Module):
78
+ def __init__(self, num_channels, affine=True):
79
+ super().__init__()
80
+ if affine:
81
+ self.weight = torch.nn.Parameter(torch.ones(num_channels))
82
+ self.bias = torch.nn.Parameter(torch.zeros(num_channels))
83
+ else:
84
+ self.register_parameter("weight", None)
85
+ self.register_parameter("bias", None)
86
+
87
+ def forward(self, input):
88
+ if self.weight is None:
89
+ return input
90
+ shape = [1, -1] + [1] * (input.dim() - 2)
91
+ return input * self.weight.view(*shape) + self.bias.view(*shape)
92
+
93
+
94
+ class FusedGroupNorm3D(torch.nn.Module):
95
+ """Compatibility wrapper implemented with native PyTorch ops."""
96
+
97
+ def __init__(
98
+ self,
99
+ num_groups,
100
+ num_channels,
101
+ eps=1e-5,
102
+ affine=True,
103
+ activation="silu",
104
+ cond_channels=None,
105
+ use_t_isolated_gn=False,
106
+ padding_mode="zeros",
107
+ padding_mode_t=None,
108
+ causal=True,
109
+ ):
110
+ super().__init__()
111
+ _validate_activation(activation)
112
+ self.num_groups = num_groups
113
+ self.num_channels = num_channels
114
+ self.eps = eps
115
+ self.affine = affine
116
+ self.activation = activation
117
+ self.use_t_isolated_gn = use_t_isolated_gn
118
+
119
+ if cond_channels is not None:
120
+ self.use_spatial_affine = True
121
+ self.norm_layer = DummyAffine(num_channels, affine=affine)
122
+ self.conv_y = SpatialParallelConv3d(
123
+ cond_channels,
124
+ num_channels,
125
+ kernel_size=1,
126
+ padding_mode=padding_mode,
127
+ padding_mode_t=padding_mode_t,
128
+ causal=causal,
129
+ )
130
+ self.conv_b = SpatialParallelConv3d(
131
+ cond_channels,
132
+ num_channels,
133
+ kernel_size=1,
134
+ padding_mode=padding_mode,
135
+ padding_mode_t=padding_mode_t,
136
+ causal=causal,
137
+ )
138
+ else:
139
+ self.use_spatial_affine = False
140
+ if self.affine:
141
+ self.weight = torch.nn.Parameter(torch.ones(num_channels))
142
+ self.bias = torch.nn.Parameter(torch.zeros(num_channels))
143
+ else:
144
+ self.register_parameter("weight", None)
145
+ self.register_parameter("bias", None)
146
+
147
+ def forward(self, f, cond=None):
148
+ need_reshape = self.use_t_isolated_gn and f.dim() == 5
149
+ batch = f.shape[0] if need_reshape else None
150
+ f_size = f.shape[-3:]
151
+ if need_reshape:
152
+ f = _merge_time_to_batch(f)
153
+
154
+ if self.use_spatial_affine:
155
+ scale = self.conv_y(cond)
156
+ bias = self.conv_b(cond)
157
+ if math.prod(scale.shape[-3:]) * math.prod(bias.shape[-3:]) > 1:
158
+ scale = F.interpolate(scale, size=f_size, mode="nearest")
159
+ bias = F.interpolate(bias, size=f_size, mode="nearest")
160
+ if need_reshape:
161
+ scale = _merge_time_to_batch(scale)
162
+ bias = _merge_time_to_batch(bias)
163
+ out = fused_spatial_norm(
164
+ f,
165
+ self.num_groups,
166
+ self.norm_layer.weight,
167
+ self.norm_layer.bias,
168
+ scale,
169
+ bias,
170
+ self.eps,
171
+ self.activation,
172
+ )
173
+ else:
174
+ if cond is not None:
175
+ raise NotImplementedError("Dynamic affine is not defined")
176
+ weight = self.weight if self.affine else None
177
+ bias = self.bias if self.affine else None
178
+ out = fused_group_norm(
179
+ f, self.num_groups, weight, bias, self.eps, self.activation
180
+ )
181
+
182
+ if need_reshape:
183
+ out = _split_time_from_batch(out, batch)
184
+ return out
185
+
186
+
187
+ class SpatialParallelGroupNorm(nn.GroupNorm):
188
+ def __init__(
189
+ self,
190
+ *args,
191
+ **kwargs,
192
+ ):
193
+ super().__init__(*args, **kwargs)
194
+ self.spatial_parallel = False
195
+
196
+ def _compute_stats(self, input):
197
+ batch, channels = input.shape[0], input.shape[1]
198
+ spatial_dims = input.shape[2:]
199
+ spatial_size = math.prod(spatial_dims)
200
+
201
+ groups = self.num_groups
202
+ x = input.reshape(batch, groups, channels // groups, -1).to(torch.float32)
203
+
204
+ local_sum = x.sum(dim=(2, 3))
205
+ local_square_sum = (x * x).sum(dim=(2, 3))
206
+ local_n = (channels // groups) * spatial_size
207
+ local_n_tensor = torch.full_like(local_sum, float(local_n))
208
+
209
+ stats = torch.stack([local_sum, local_square_sum, local_n_tensor], dim=0)
210
+
211
+ local_process_group = get_parallel_state()["local_process_group"]
212
+ stats = all_reduce(stats, dist.ReduceOp.SUM, local_process_group)
213
+
214
+ total_sum = stats[0]
215
+ total_square_sum = stats[1]
216
+ total_n = stats[2]
217
+
218
+ mean = total_sum / total_n
219
+ var = (total_square_sum / total_n) - mean**2
220
+ return mean, var
221
+
222
+ def forward(self, input):
223
+ if not self.spatial_parallel:
224
+ return nn.GroupNorm.forward(self, input)
225
+
226
+ batch, channels = input.shape[0], input.shape[1]
227
+ orig_shape = input.shape
228
+
229
+ mean, var = self._compute_stats(input)
230
+ x = input.reshape(batch, self.num_groups, channels // self.num_groups, -1)
231
+
232
+ mean = mean.unsqueeze(-1).unsqueeze(-1)
233
+ var = var.unsqueeze(-1).unsqueeze(-1)
234
+ x = (x - mean) / torch.sqrt(var + self.eps)
235
+ x = x.reshape(orig_shape)
236
+
237
+ if self.affine:
238
+ shape = [1, -1] + [1] * (len(orig_shape) - 2)
239
+ x *= self.weight.view(*shape)
240
+ x += self.bias.view(*shape)
241
+
242
+ return x
243
+
244
+
245
+ class TemporalIsolatedSpatialParallelGroupNorm(SpatialParallelGroupNorm):
246
+ def forward(self, input):
247
+ if input.dim() == 5:
248
+ batch = input.shape[0]
249
+ input = _merge_time_to_batch(input)
250
+ output = super().forward(input)
251
+ return _split_time_from_batch(output, batch)
252
+ return super().forward(input)
253
+
254
+
255
+
256
+
257
+
258
+
259
+
260
+
261
+ class SpatialNorm3D(nn.Module):
262
+ def __init__(
263
+ self,
264
+ f_channels,
265
+ zq_channels,
266
+ padding_mode="zeros",
267
+ padding_mode_t=None,
268
+ causal=True,
269
+ use_t_isolated_gn=False,
270
+ ):
271
+ super().__init__()
272
+ norm_cls = (
273
+ TemporalIsolatedSpatialParallelGroupNorm
274
+ if use_t_isolated_gn
275
+ else SpatialParallelGroupNorm
276
+ )
277
+ self.norm_layer = norm_cls(
278
+ num_groups=32, num_channels=f_channels, eps=1e-6, affine=True
279
+ )
280
+
281
+ self.conv_y = SpatialParallelConv3d(
282
+ zq_channels,
283
+ f_channels,
284
+ kernel_size=1,
285
+ padding_mode=padding_mode,
286
+ padding_mode_t=padding_mode_t,
287
+ causal=causal,
288
+ )
289
+ self.conv_b = SpatialParallelConv3d(
290
+ zq_channels,
291
+ f_channels,
292
+ kernel_size=1,
293
+ padding_mode=padding_mode,
294
+ padding_mode_t=padding_mode_t,
295
+ causal=causal,
296
+ )
297
+
298
+ def forward(self, f, zq):
299
+ f_size = f.shape[-3:]
300
+ norm_f = self.norm_layer(f)
301
+ scale = self.conv_y(zq)
302
+ bias = self.conv_b(zq)
303
+
304
+ if math.prod(scale.shape[-3:]) * math.prod(bias.shape[-3:]) > 1:
305
+ scale = F.interpolate(scale, size=f_size, mode="nearest")
306
+ bias = F.interpolate(bias, size=f_size, mode="nearest")
307
+
308
+ return norm_f * scale + bias
309
+
310
+
311
+ def get_spatial_norm_3d(
312
+ num_channels,
313
+ cond_channels,
314
+ *,
315
+ padding_mode="zeros",
316
+ padding_mode_t=None,
317
+ causal=True,
318
+ use_t_isolated_gn=False,
319
+ ):
320
+ if os.environ.get("MINIMAX_H3_USE_FUSED_NORM", "false").lower() == "true":
321
+ return FusedGroupNorm3D(
322
+ num_groups=32,
323
+ num_channels=num_channels,
324
+ eps=1e-6,
325
+ affine=True,
326
+ cond_channels=cond_channels,
327
+ use_t_isolated_gn=use_t_isolated_gn,
328
+ padding_mode=padding_mode,
329
+ padding_mode_t=padding_mode_t,
330
+ causal=causal,
331
+ )
332
+ return SpatialNorm3D(
333
+ num_channels,
334
+ cond_channels,
335
+ padding_mode=padding_mode,
336
+ padding_mode_t=padding_mode_t,
337
+ causal=causal,
338
+ use_t_isolated_gn=use_t_isolated_gn,
339
+ )
340
+
341
+
342
+ def get_group_norm_3d(num_channels, use_t_isolated_gn=False):
343
+ if os.environ.get("MINIMAX_H3_USE_FUSED_NORM", "false").lower() == "true":
344
+ return FusedGroupNorm3D(
345
+ num_groups=32,
346
+ num_channels=num_channels,
347
+ eps=1e-6,
348
+ affine=True,
349
+ use_t_isolated_gn=use_t_isolated_gn,
350
+ )
351
+
352
+ norm_cls = (
353
+ TemporalIsolatedSpatialParallelGroupNorm
354
+ if use_t_isolated_gn
355
+ else SpatialParallelGroupNorm
356
+ )
357
+ return norm_cls(num_groups=32, num_channels=num_channels, eps=1e-6, affine=True)
FL2VA/video_vae/normalize.py ADDED
@@ -0,0 +1,39 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Pixel normalization transforms for the MiniMax H3 visual VAE.
3
+ from typing import Tuple
4
+ from torchvision.transforms import Normalize
5
+
6
+
7
+ NORM_CONFIGS = {
8
+ "imagenet": {
9
+ "mean": (0.485, 0.456, 0.406),
10
+ "std": (0.229, 0.224, 0.225),
11
+ },
12
+ "simple": {
13
+ "mean": (0.5, 0.5, 0.5),
14
+ "std": (0.5, 0.5, 0.5),
15
+ },
16
+ "raw": {
17
+ "mean": (0.0, 0.0, 0.0),
18
+ "std": (1.0, 1.0, 1.0),
19
+ },
20
+ }
21
+
22
+
23
+ def get_norm_constants(norm_type: str = "imagenet") -> Tuple[Tuple[float, ...], Tuple[float, ...]]:
24
+ if norm_type not in NORM_CONFIGS:
25
+ raise ValueError(f"Unknown norm_type: {norm_type}. Must be one of {list(NORM_CONFIGS.keys())}")
26
+ config = NORM_CONFIGS[norm_type]
27
+ return config["mean"], config["std"]
28
+
29
+
30
+ def get_normalize_transform(norm_type: str = "imagenet") -> Normalize:
31
+ mean, std = get_norm_constants(norm_type)
32
+ return Normalize(mean, std)
33
+
34
+
35
+ def get_denormalize_transform(norm_type: str = "imagenet") -> Normalize:
36
+ mean, std = get_norm_constants(norm_type)
37
+ inv_mean = tuple(-m / s for m, s in zip(mean, std))
38
+ inv_std = tuple(1.0 / s for s in std)
39
+ return Normalize(inv_mean, inv_std)
FL2VA/video_vae/parallel.py ADDED
@@ -0,0 +1,418 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Parallel state and collective helpers for the MiniMax H3 visual VAE.
3
+ import os
4
+ import math
5
+ import torch
6
+ import torch.nn.functional as F
7
+ import torch.distributed as dist
8
+ from torch.autograd import Function
9
+ from torch.distributed import group, ReduceOp
10
+
11
+
12
+ def get_group_rank(group_size):
13
+ global_rank = int(os.environ["RANK"])
14
+ group_rank = global_rank % group_size
15
+ return group_rank
16
+
17
+
18
+ _parallel_state = {}
19
+
20
+ # The torch.autograd.Function subclasses below keep their backward() methods
21
+ # to satisfy the autograd.Function contract; only the forward paths are
22
+ # exercised in this inference-only bundle.
23
+
24
+
25
+ def get_parallel_state():
26
+ return _parallel_state
27
+
28
+
29
+ class _AllGather(Function):
30
+ @staticmethod
31
+ def forward(ctx, group, tensor):
32
+ tensor = tensor.contiguous()
33
+ ctx.group = group
34
+ group_size = dist.get_world_size(group=group)
35
+ out_tensor_list = [torch.empty_like(tensor) for _ in range(group_size)]
36
+ dist.all_gather(out_tensor_list, tensor, group=group)
37
+ return tuple(out_tensor_list)
38
+
39
+ @staticmethod
40
+ def backward(ctx, *grad_outputs):
41
+ rank = dist.get_rank(group=ctx.group)
42
+ gx = torch.empty_like(grad_outputs[rank])
43
+ gx = gx.contiguous()
44
+ grad_outputs = tuple(t.contiguous() for t in grad_outputs)
45
+ dist.reduce_scatter(gx, list(grad_outputs), op=ReduceOp.SUM, group=ctx.group)
46
+ return (None, gx)
47
+
48
+
49
+ @torch.compiler.disable
50
+ def all_gather(tensor, group=group.WORLD):
51
+ return _AllGather.apply(group, tensor)
52
+
53
+
54
+ class _AllGatherVarShape(Function):
55
+ @staticmethod
56
+ def forward(ctx, group, tensor):
57
+ tensor = tensor.contiguous()
58
+ ctx.group = group
59
+ ctx.original_shape = tensor.shape
60
+
61
+ shape_info = torch.tensor(
62
+ list(tensor.shape), dtype=torch.long, device=tensor.device
63
+ )
64
+
65
+ shape_list = [
66
+ torch.empty_like(shape_info)
67
+ for _ in range(dist.get_world_size(group=group))
68
+ ]
69
+ dist.all_gather(shape_list, shape_info, group=group)
70
+
71
+ all_shapes = [tuple(shape_tensor.tolist()) for shape_tensor in shape_list]
72
+ ctx.all_shapes = all_shapes
73
+
74
+ flat_tensor = tensor.flatten()
75
+ max_size = max(math.prod(s) for s in all_shapes)
76
+
77
+ if flat_tensor.numel() < max_size:
78
+ padded = torch.zeros(max_size, dtype=tensor.dtype, device=tensor.device)
79
+ padded[: flat_tensor.numel()] = flat_tensor
80
+ flat_tensor = padded
81
+
82
+ gathered_flat = [torch.empty_like(flat_tensor) for _ in range(len(all_shapes))]
83
+ dist.all_gather(gathered_flat, flat_tensor, group=group)
84
+
85
+ return tuple(
86
+ t[: math.prod(shape)].reshape(shape)
87
+ for t, shape in zip(gathered_flat, all_shapes)
88
+ )
89
+
90
+ @staticmethod
91
+ def backward(ctx, *grad_outputs):
92
+ rank = dist.get_rank(group=ctx.group)
93
+
94
+ grad_input = grad_outputs[rank]
95
+ if grad_input is None:
96
+ return None, torch.zeros(
97
+ ctx.original_shape, device=next(iter(grad_outputs)).device
98
+ )
99
+
100
+ max_size = max(math.prod(shape) for shape in ctx.all_shapes)
101
+ padded_grads = []
102
+
103
+ for grad, shape in zip(grad_outputs, ctx.all_shapes):
104
+ if grad is not None:
105
+ flat_grad = grad.flatten()
106
+ else:
107
+ flat_grad = torch.zeros(
108
+ math.prod(shape),
109
+ dtype=grad_input.dtype,
110
+ device=grad_input.device,
111
+ )
112
+
113
+ if flat_grad.numel() < max_size:
114
+ padded = torch.zeros(
115
+ max_size, dtype=flat_grad.dtype, device=flat_grad.device
116
+ )
117
+ padded[: flat_grad.numel()] = flat_grad
118
+ padded_grads.append(padded)
119
+ else:
120
+ padded_grads.append(flat_grad)
121
+
122
+ result_grad = torch.empty_like(padded_grads[0])
123
+ dist.reduce_scatter(result_grad, padded_grads, op=ReduceOp.SUM, group=ctx.group)
124
+
125
+ original_size = math.prod(ctx.original_shape)
126
+ return None, result_grad[:original_size].reshape(ctx.original_shape)
127
+
128
+
129
+ @torch.compiler.disable
130
+ def all_gather_var_shape(tensor, group=group.WORLD):
131
+ return _AllGatherVarShape.apply(group, tensor)
132
+
133
+
134
+ class _AllReduce(Function):
135
+ @staticmethod
136
+ def forward(ctx, _input, op, group):
137
+ ctx.group = group
138
+ ctx.op = op
139
+ _input = _input.clone()
140
+ dist.all_reduce(_input, op=op, group=group)
141
+ return _input
142
+
143
+ @staticmethod
144
+ def backward(ctx, grad_output):
145
+ grad_output = grad_output.clone()
146
+ dist.all_reduce(grad_output, op=ctx.op, group=ctx.group)
147
+ return grad_output, None, None
148
+
149
+
150
+ @torch.compiler.disable
151
+ def all_reduce(input_, op, group):
152
+ return _AllReduce.apply(input_, op, group)
153
+
154
+
155
+ class _AlltoAllSingle(Function):
156
+ @staticmethod
157
+ def forward(ctx, group, input):
158
+ ctx.group = group
159
+
160
+ world_size = dist.get_world_size(group=group)
161
+ if world_size == 1:
162
+ return input
163
+
164
+ input = input.contiguous()
165
+ output = torch.empty_like(input)
166
+ dist.all_to_all_single(
167
+ output,
168
+ input,
169
+ group=group,
170
+ )
171
+ return output
172
+
173
+ @staticmethod
174
+ def backward(ctx, grad_output):
175
+ return (None, _AlltoAllSingle.apply(ctx.group, grad_output))
176
+
177
+
178
+ @torch.compiler.disable
179
+ def all_to_all_single(input, group=group.WORLD):
180
+ return _AlltoAllSingle.apply(group, input)
181
+
182
+
183
+
184
+ @torch.compiler.disable
185
+ def get_subseq(input, sp_size=None):
186
+ if sp_size is None:
187
+ state = get_parallel_state()
188
+ if not state.get("sp_enabled", False):
189
+ return input
190
+ sp_size = state["sp_size"]
191
+ sp_rank = state["sp_rank"]
192
+ else:
193
+ sp_rank = get_group_rank(sp_size)
194
+
195
+ if sp_size == 1:
196
+ return input
197
+
198
+ if input.shape[1] % sp_size != 0:
199
+ raise ValueError(
200
+ f"Input shape {input.shape} is not divisible by sp_size {sp_size}"
201
+ )
202
+
203
+ return torch.chunk(input, sp_size, dim=1)[sp_rank]
204
+
205
+
206
+ @torch.compiler.disable
207
+ def gather_subseq(input, sp_size=None, local_process_group=None):
208
+ if sp_size is None:
209
+ state = get_parallel_state()
210
+ if not state.get("sp_enabled", False):
211
+ return input
212
+ sp_size = state["sp_size"]
213
+ local_process_group = state["sp_process_group"]
214
+
215
+ if sp_size == 1:
216
+ return input
217
+
218
+ output = all_gather(input, group=local_process_group)
219
+ output = torch.cat(output, dim=1)
220
+ return output
221
+
222
+
223
+ @torch.compiler.disable
224
+ def all_to_all_4D(
225
+ input: torch.tensor,
226
+ scatter_idx: int = 2,
227
+ gather_idx: int = 1,
228
+ group=None,
229
+ ):
230
+ assert (
231
+ input.dim() == 4
232
+ ), f"input must be 4D tensor, got {input.dim()} and shape {input.shape}"
233
+
234
+ if group is None:
235
+ seq_world_size = 1
236
+ else:
237
+ seq_world_size = dist.get_world_size(group)
238
+
239
+ if seq_world_size == 1:
240
+ return input
241
+
242
+ if scatter_idx == 2 and gather_idx == 1:
243
+ bs, shard_seqlen, hc, hs = input.shape
244
+ seqlen = shard_seqlen * seq_world_size
245
+ shard_hc = hc // seq_world_size
246
+
247
+ input_t = (
248
+ input.reshape(bs, shard_seqlen, seq_world_size, shard_hc, hs)
249
+ .transpose(0, 2)
250
+ .contiguous()
251
+ )
252
+
253
+ output = all_to_all_single(input_t, group=group)
254
+ output = output.reshape(seqlen, bs, shard_hc, hs)
255
+ output = output.transpose(0, 1).contiguous().reshape(bs, seqlen, shard_hc, hs)
256
+ return output
257
+
258
+ elif scatter_idx == 1 and gather_idx == 2:
259
+ bs, seqlen, shard_hc, hs = input.shape
260
+ hc = shard_hc * seq_world_size
261
+ shard_seqlen = seqlen // seq_world_size
262
+
263
+ input_t = (
264
+ input.reshape(bs, seq_world_size, shard_seqlen, shard_hc, hs)
265
+ .transpose(0, 3)
266
+ .transpose(0, 1)
267
+ .contiguous()
268
+ .reshape(seq_world_size, shard_hc, shard_seqlen, bs, hs)
269
+ )
270
+
271
+ output = all_to_all_single(input_t, group=group)
272
+ output = output.reshape(hc, shard_seqlen, bs, hs)
273
+ output = output.transpose(0, 2).contiguous().reshape(bs, shard_seqlen, hc, hs)
274
+ return output
275
+ else:
276
+ raise RuntimeError("scatter_idx must be 1 or 2 and gather_idx must be 1 or 2")
277
+
278
+
279
+
280
+ @torch.compiler.disable
281
+ def exchange_borders(
282
+ input_, padding, pad_mode, sp_rank, sp_size, group, dim=-1, async_op=False
283
+ ):
284
+ if async_op and input_.requires_grad:
285
+ raise ValueError("async_op is not supported backward, check previous commits")
286
+
287
+ slice_indices = [slice(None)] * input_.ndim
288
+ slice_indices[dim] = slice(None, padding)
289
+ first_tensor = input_[tuple(slice_indices)].contiguous()
290
+
291
+ slice_indices[dim] = slice(-padding, None)
292
+ last_tensor = input_[tuple(slice_indices)].contiguous()
293
+
294
+ if async_op:
295
+ first_borders = [torch.empty_like(first_tensor) for _ in range(sp_size)]
296
+ last_borders = [torch.empty_like(last_tensor) for _ in range(sp_size)]
297
+
298
+ handle_first = dist.all_gather(
299
+ first_borders, first_tensor, group=group, async_op=True
300
+ )
301
+ handle_last = dist.all_gather(
302
+ last_borders, last_tensor, group=group, async_op=True
303
+ )
304
+ else:
305
+ first_borders = all_gather(first_tensor, group=group)
306
+ last_borders = all_gather(last_tensor, group=group)
307
+
308
+ if dim < 0:
309
+ pad_dim = -1 - dim
310
+ else:
311
+ pad_dim = input_.ndim - 1 - dim
312
+
313
+ pad_size = [0] * ((input_.ndim - 2) * 2)
314
+ pad_size[pad_dim * 2] = padding
315
+ pad_size[pad_dim * 2 + 1] = padding
316
+ output = F.pad(input_, pad_size, mode=pad_mode)
317
+
318
+ slice_indices = [slice(None)] * input_.ndim
319
+ slice_indices[dim] = slice(-padding, None)
320
+
321
+ if async_op:
322
+ handle_first.wait()
323
+
324
+ if sp_rank < sp_size - 1:
325
+ output[tuple(slice_indices)] = first_borders[sp_rank + 1]
326
+ else:
327
+ output[tuple(slice_indices)] += first_borders[0] * 0.0
328
+
329
+ slice_indices = [slice(None)] * input_.ndim
330
+ slice_indices[dim] = slice(None, padding)
331
+
332
+ if async_op:
333
+ handle_last.wait()
334
+
335
+ if sp_rank > 0:
336
+ output[tuple(slice_indices)] = last_borders[sp_rank - 1]
337
+ else:
338
+ output[tuple(slice_indices)] += last_borders[sp_size - 1] * 0.0
339
+
340
+ return output
341
+
342
+
343
+ @torch.compiler.disable
344
+ def exchange_strides(
345
+ input_, pad_mode, sp_rank, sp_size, group, dim=-1, async_op=False
346
+ ):
347
+ if async_op and input_.requires_grad:
348
+ raise ValueError("async_op is not supported backward, check previous commits")
349
+
350
+ if dim not in [-1, -2]:
351
+ raise ValueError("dim must be -1 (W) or -2 (H) for exchange_strides")
352
+
353
+ if dim == -1:
354
+ if input_.ndim == 5:
355
+ input_ = F.pad(input_, (0, 0, 0, 1, 0, 0), mode=pad_mode)
356
+ elif input_.ndim == 4:
357
+ input_ = F.pad(input_, (0, 0, 0, 1), mode=pad_mode)
358
+ else:
359
+ raise ValueError(f"Input must have 4 or 5 dimensions, got {input_.ndim}")
360
+
361
+ left_border = input_[..., :1].contiguous()
362
+
363
+ if async_op:
364
+ left_borders = [torch.empty_like(left_border) for _ in range(sp_size)]
365
+ handle = dist.all_gather(
366
+ left_borders, left_border, group=group, async_op=True
367
+ )
368
+ else:
369
+ left_borders = all_gather(left_border, group=group)
370
+
371
+ if input_.ndim == 5:
372
+ output = F.pad(input_, (0, 1, 0, 0, 0, 0), mode=pad_mode)
373
+ elif input_.ndim == 4:
374
+ output = F.pad(input_, (0, 1, 0, 0), mode=pad_mode)
375
+ else:
376
+ raise ValueError(f"Input must have 4 or 5 dimensions, got {input_.ndim}")
377
+
378
+ if async_op:
379
+ handle.wait()
380
+
381
+ if sp_rank != sp_size - 1:
382
+ output[..., -1:] = left_borders[sp_rank + 1]
383
+ else:
384
+ output[..., -1:] += left_borders[0] * 0.0
385
+ else:
386
+ if input_.ndim == 5:
387
+ input_ = F.pad(input_, (0, 1, 0, 0, 0, 0), mode=pad_mode)
388
+ elif input_.ndim == 4:
389
+ input_ = F.pad(input_, (0, 1, 0, 0), mode=pad_mode)
390
+ else:
391
+ raise ValueError(f"Input must have 4 or 5 dimensions, got {input_.ndim}")
392
+
393
+ top_border = input_[..., :1, :].contiguous()
394
+
395
+ if async_op:
396
+ top_borders = [torch.empty_like(top_border) for _ in range(sp_size)]
397
+ handle = dist.all_gather(
398
+ top_borders, top_border, group=group, async_op=True
399
+ )
400
+ else:
401
+ top_borders = all_gather(top_border, group=group)
402
+
403
+ if input_.ndim == 5:
404
+ output = F.pad(input_, (0, 0, 0, 1, 0, 0), mode=pad_mode)
405
+ elif input_.ndim == 4:
406
+ output = F.pad(input_, (0, 0, 0, 1), mode=pad_mode)
407
+ else:
408
+ raise ValueError(f"Input must have 4 or 5 dimensions, got {input_.ndim}")
409
+
410
+ if async_op:
411
+ handle.wait()
412
+
413
+ if sp_rank != sp_size - 1:
414
+ output[..., -1:, :] = top_borders[sp_rank + 1]
415
+ else:
416
+ output[..., -1:, :] += top_borders[0] * 0.0
417
+
418
+ return output
FL2VA/video_vae/source/config.json ADDED
@@ -0,0 +1,71 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "_class_name": "AutoencoderKLLegacy",
3
+ "_diffusers_version": "0.32.2",
4
+ "causal_decoder": false,
5
+ "causal_encoder": true,
6
+ "ch": 128,
7
+ "ch_mult": [
8
+ 1,
9
+ 2,
10
+ 2,
11
+ 4,
12
+ 4,
13
+ 8
14
+ ],
15
+ "embed_dim": 24,
16
+ "in_channels": 3,
17
+ "num_res_blocks": 2,
18
+ "num_res_blocks_decoder": null,
19
+ "out_ch": 3,
20
+ "padding_mode": "reflect",
21
+ "padding_mode_t": null,
22
+ "pixel_norm_type": "imagenet",
23
+ "scaling_factor": 1.0,
24
+ "shift_factor": 0.0,
25
+ "space_down": [
26
+ 2,
27
+ 2,
28
+ 2,
29
+ 2,
30
+ 1,
31
+ 1
32
+ ],
33
+ "space_up": [
34
+ 1,
35
+ 2,
36
+ 2,
37
+ 2,
38
+ 2,
39
+ 1
40
+ ],
41
+ "time_down": [
42
+ 1,
43
+ 2,
44
+ 2,
45
+ 1,
46
+ 1,
47
+ 1
48
+ ],
49
+ "time_up": null,
50
+ "use_3d_conv": true,
51
+ "use_t_isolated_gn": true,
52
+ "use_vit_decoder": true,
53
+ "vae_ratio": 16,
54
+ "vae_ratio_t": 4,
55
+ "vit_decoder_kwargs": {
56
+ "dim_head": 64,
57
+ "ffn_activation_fn": "silu",
58
+ "ffn_use_gated": true,
59
+ "heads": 32,
60
+ "norm_affine": true,
61
+ "norm_type": "rms_norm",
62
+ "num_layers": 36,
63
+ "qk_norm_affine": false,
64
+ "qk_norm_type": "rms_norm",
65
+ "rope_dim_ratio": 0.75,
66
+ "rope_theta": 100.0
67
+ },
68
+ "z_channels": 24,
69
+ "zq_ch_decoder": null,
70
+ "zq_ch_encoder": null
71
+ }
FL2VA/video_vae/source/model.safetensors ADDED
@@ -0,0 +1,3 @@
 
 
 
 
1
+ version https://git-lfs.github.com/spec/v1
2
+ oid sha256:5f0c2e161d895a9fee7645ca32d4a7e3a22b90cacfcbeba62ec999cdbbefe0d3
3
+ size 10415548320
FL2VA/video_vae/utils.py ADDED
@@ -0,0 +1,18 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Module helpers for the MiniMax H3 visual VAE (inference-only bundle).
3
+
4
+
5
+ def apply_spatial_parallel(module, enabled, chunk_dim=-1):
6
+ from .conv import SpatialParallelConv3d
7
+ from .norm import FusedGroupNorm3D, SpatialParallelGroupNorm
8
+
9
+ if hasattr(module, "set_spatial_parallel"):
10
+ module.set_spatial_parallel(enabled)
11
+ for m in module.modules():
12
+ if enabled and isinstance(m, FusedGroupNorm3D):
13
+ raise NotImplementedError("FusedGroupNorm3D is incompatible with SP")
14
+ if isinstance(m, SpatialParallelGroupNorm):
15
+ m.spatial_parallel = enabled
16
+ elif isinstance(m, SpatialParallelConv3d):
17
+ m.spatial_parallel = enabled
18
+ m.chunk_dim = chunk_dim
FL2VA/video_vae/vae_cnn.py ADDED
@@ -0,0 +1,304 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # 3D causal CNN encoder for the MiniMax H3 visual VAE (inference-only bundle).
3
+ import os
4
+ import torch.nn as nn
5
+ import torch.nn.functional as F
6
+
7
+ from .attention import maybe_checkpoint
8
+ from .conv import SpatialParallelConv3d
9
+ from .norm import get_spatial_norm_3d
10
+ from .parallel import get_parallel_state, exchange_strides
11
+ from .norm import get_group_norm_3d
12
+
13
+
14
+
15
+
16
+
17
+
18
+
19
+
20
+
21
+
22
+ # ============================================================================
23
+ # 3D CNN Components
24
+ # ============================================================================
25
+
26
+
27
+ def norm_silu(x, norm, cond=None):
28
+ if cond is None:
29
+ return F.silu(norm(x))
30
+ else:
31
+ return F.silu(norm(x, cond))
32
+
33
+
34
+ class Downsample3D(nn.Module):
35
+ def __init__(
36
+ self,
37
+ in_channels,
38
+ out_channels,
39
+ time_stride=1,
40
+ space_stride=2,
41
+ padding_mode="zeros",
42
+ padding_mode_t=None,
43
+ causal=True,
44
+ ):
45
+ super().__init__()
46
+ self.time_stride = time_stride
47
+ self.space_stride = space_stride
48
+
49
+ assert time_stride in [1, 2]
50
+ assert space_stride in [1, 2, 3]
51
+
52
+ self.conv = SpatialParallelConv3d(
53
+ in_channels,
54
+ out_channels,
55
+ kernel_size=3,
56
+ padding=(1, 0, 0),
57
+ stride=(time_stride, space_stride, space_stride),
58
+ padding_mode=padding_mode,
59
+ padding_mode_t=padding_mode_t,
60
+ causal=causal,
61
+ )
62
+ self.causal = self.conv.causal
63
+ self.pad_mode = self.conv.pad_mode
64
+
65
+ def forward(self, x):
66
+ if self.space_stride == 2:
67
+ if getattr(self.conv, "spatial_parallel", False):
68
+ state = get_parallel_state()
69
+ x = exchange_strides(
70
+ x,
71
+ self.pad_mode,
72
+ state["sp_rank"],
73
+ state["sp_size"],
74
+ state["sp_process_group"],
75
+ self.conv.chunk_dim,
76
+ )
77
+ else:
78
+ pad = (0, 1, 0, 1, 0, 0)
79
+ x = F.pad(x, pad, mode=self.pad_mode)
80
+ return self.conv(x)
81
+
82
+
83
+ class ResnetBlock3D(nn.Module):
84
+ def __init__(
85
+ self,
86
+ in_channels,
87
+ out_channels=None,
88
+ zq_ch=None,
89
+ padding_mode="zeros",
90
+ padding_mode_t=None,
91
+ causal=True,
92
+ use_t_isolated_gn=False,
93
+ ):
94
+ super().__init__()
95
+ self.in_channels = in_channels
96
+ out_channels = in_channels if out_channels is None else out_channels
97
+ self.out_channels = out_channels
98
+
99
+ self.use_fused_norm = (
100
+ os.environ.get("MINIMAX_H3_USE_FUSED_NORM", "false").lower() == "true"
101
+ )
102
+
103
+ if zq_ch is None:
104
+ self.norm1 = get_group_norm_3d(in_channels, use_t_isolated_gn=use_t_isolated_gn)
105
+ self.norm2 = get_group_norm_3d(out_channels, use_t_isolated_gn=use_t_isolated_gn)
106
+ else:
107
+ self.norm1 = get_spatial_norm_3d(
108
+ in_channels,
109
+ zq_ch,
110
+ padding_mode=padding_mode,
111
+ padding_mode_t=padding_mode_t,
112
+ causal=causal,
113
+ use_t_isolated_gn=use_t_isolated_gn,
114
+ )
115
+ self.norm2 = get_spatial_norm_3d(
116
+ out_channels,
117
+ zq_ch,
118
+ padding_mode=padding_mode,
119
+ padding_mode_t=padding_mode_t,
120
+ causal=causal,
121
+ use_t_isolated_gn=use_t_isolated_gn,
122
+ )
123
+
124
+ self.conv1 = SpatialParallelConv3d(
125
+ in_channels,
126
+ out_channels,
127
+ kernel_size=3,
128
+ padding=1,
129
+ padding_mode=padding_mode,
130
+ padding_mode_t=padding_mode_t,
131
+ causal=causal,
132
+ )
133
+
134
+ self.conv2 = SpatialParallelConv3d(
135
+ out_channels,
136
+ out_channels,
137
+ kernel_size=3,
138
+ padding=1,
139
+ padding_mode=padding_mode,
140
+ padding_mode_t=padding_mode_t,
141
+ causal=causal,
142
+ )
143
+
144
+ if self.in_channels != self.out_channels:
145
+ self.nin_shortcut = SpatialParallelConv3d(
146
+ in_channels,
147
+ out_channels,
148
+ kernel_size=1,
149
+ padding_mode=padding_mode,
150
+ padding_mode_t=padding_mode_t,
151
+ causal=causal,
152
+ )
153
+
154
+ def forward(self, x, zq=None):
155
+ h = x
156
+
157
+ if self.use_fused_norm:
158
+ h = self.norm1(h, zq)
159
+ else:
160
+ h = norm_silu(h, self.norm1, zq)
161
+
162
+ h = self.conv1(h)
163
+
164
+ if self.use_fused_norm:
165
+ h = self.norm2(h, zq)
166
+ else:
167
+ h = norm_silu(h, self.norm2, zq)
168
+
169
+ h = self.conv2(h)
170
+
171
+ if self.in_channels != self.out_channels:
172
+ x = self.nin_shortcut(x)
173
+
174
+ return x + h
175
+
176
+
177
+ class EncoderFCN3D(nn.Module):
178
+ def __init__(
179
+ self,
180
+ ch,
181
+ ch_mult,
182
+ space_down,
183
+ time_down,
184
+ num_res_blocks,
185
+ in_channels,
186
+ z_channels,
187
+ double_z=False,
188
+ zq_ch=None,
189
+ padding_mode="zeros",
190
+ padding_mode_t=None,
191
+ causal=True,
192
+ use_t_isolated_gn=False,
193
+ ):
194
+ super().__init__()
195
+ self.ch = ch
196
+ self.num_levels = len(ch_mult)
197
+
198
+ if isinstance(num_res_blocks, int):
199
+ self.num_res_blocks = [num_res_blocks] * self.num_levels
200
+ else:
201
+ self.num_res_blocks = num_res_blocks
202
+
203
+ self.space_down_factors = space_down
204
+ self.time_down_factors = time_down
205
+ self.in_channels = in_channels
206
+
207
+ self.use_fused_norm = (
208
+ os.environ.get("MINIMAX_H3_USE_FUSED_NORM", "false").lower() == "true"
209
+ )
210
+
211
+ block_mid = [ch * ch_mult[i] for i in range(self.num_levels)]
212
+ block_in = [block_mid[0]] + block_mid[:-1]
213
+ block_out = block_mid
214
+
215
+ conv_kwargs = dict(
216
+ padding_mode=padding_mode,
217
+ padding_mode_t=padding_mode_t,
218
+ causal=causal,
219
+ )
220
+
221
+ self.conv_in = SpatialParallelConv3d(
222
+ in_channels, block_in[0], kernel_size=3, padding=1, **conv_kwargs
223
+ )
224
+
225
+ self.down = nn.ModuleList()
226
+ for i_level in range(self.num_levels):
227
+ down = nn.Module()
228
+
229
+ down.block = nn.ModuleList()
230
+ for i in range(self.num_res_blocks[i_level]):
231
+ down.block.append(
232
+ ResnetBlock3D(
233
+ in_channels=block_in[i_level] if i == 0 else block_mid[i_level],
234
+ out_channels=block_mid[i_level],
235
+ zq_ch=zq_ch,
236
+ use_t_isolated_gn=use_t_isolated_gn,
237
+ **conv_kwargs,
238
+ )
239
+ )
240
+
241
+ if space_down[i_level] * time_down[i_level] > 1:
242
+ down.downsample = Downsample3D(
243
+ block_mid[i_level],
244
+ block_out[i_level],
245
+ time_stride=time_down[i_level],
246
+ space_stride=space_down[i_level],
247
+ **conv_kwargs,
248
+ )
249
+ else:
250
+ if block_out[i_level] != block_mid[i_level]:
251
+ down.downsample = SpatialParallelConv3d(
252
+ block_mid[i_level],
253
+ block_out[i_level],
254
+ kernel_size=1,
255
+ **conv_kwargs,
256
+ )
257
+
258
+ self.down.append(down)
259
+
260
+ if zq_ch is None:
261
+ self.norm_out = get_group_norm_3d(
262
+ block_out[-1], use_t_isolated_gn=use_t_isolated_gn
263
+ )
264
+ else:
265
+ self.norm_out = get_spatial_norm_3d(
266
+ block_out[-1],
267
+ zq_ch,
268
+ use_t_isolated_gn=use_t_isolated_gn,
269
+ **conv_kwargs,
270
+ )
271
+
272
+ self.conv_out = SpatialParallelConv3d(
273
+ block_out[-1],
274
+ 2 * z_channels if double_z else z_channels,
275
+ kernel_size=3,
276
+ padding=1,
277
+ **conv_kwargs,
278
+ )
279
+
280
+ self.gradient_checkpointing = False
281
+
282
+ def _set_gradient_checkpointing(self, module, value=False):
283
+ if hasattr(module, "gradient_checkpointing"):
284
+ module.gradient_checkpointing = value
285
+
286
+ def forward(self, x, zq=None):
287
+ h = self.conv_in(x)
288
+ for i_level in range(self.num_levels):
289
+ for i_block in range(self.num_res_blocks[i_level]):
290
+ h = maybe_checkpoint(self, self.down[i_level].block[i_block], h, zq)
291
+ if hasattr(self.down[i_level], "downsample"):
292
+ h = self.down[i_level].downsample(h)
293
+
294
+ if self.use_fused_norm:
295
+ h = self.norm_out(h, zq)
296
+ else:
297
+ h = norm_silu(h, self.norm_out, zq)
298
+
299
+ h = self.conv_out(h)
300
+ return h
301
+
302
+
303
+
304
+
FL2VA/video_vae/vae_module.py ADDED
@@ -0,0 +1,53 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # VAE distribution and aggregation helpers for the MiniMax H3 visual VAE.
3
+ import torch
4
+
5
+
6
+ class DiagonalGaussianDistribution(object):
7
+ def __init__(self, parameters, upcast_fp32=True):
8
+ if upcast_fp32:
9
+ parameters = parameters.to(dtype=torch.float32)
10
+
11
+ self.parameters = parameters
12
+ self.mean, self.logvar = torch.chunk(parameters, 2, dim=1)
13
+ self.logvar = torch.clamp(self.logvar, -30.0, 20.0)
14
+ self.std = torch.exp(0.5 * self.logvar)
15
+ self.var = torch.exp(self.logvar)
16
+
17
+ @torch.compiler.disable
18
+ def sample(self, generator=None):
19
+ noise = torch.randn(self.mean.shape, generator=generator)
20
+ x = self.mean + self.std * noise.to(device=self.parameters.device)
21
+ return x
22
+
23
+
24
+ class ClsTokenAggregator:
25
+ def __init__(self, vae_model):
26
+ self.vae = vae_model
27
+ self.cls_tokens = []
28
+
29
+ def __enter__(self):
30
+ return self
31
+
32
+ def __exit__(self, exc_type, exc_val, exc_tb):
33
+ if self.cls_tokens and hasattr(self.vae.encoder, "loss_info"):
34
+ self.vae.encoder.loss_info["cls_token"] = torch.stack(
35
+ self.cls_tokens, dim=0
36
+ ).mean(dim=0)
37
+ return False
38
+
39
+ def collect(self):
40
+ if (
41
+ hasattr(self.vae.encoder, "loss_info")
42
+ and "cls_token" in self.vae.encoder.loss_info
43
+ ):
44
+ self.cls_tokens.append(self.vae.encoder.loss_info["cls_token"].clone())
45
+
46
+ def collect_stacked(self, num_tiles, sample_batch_size):
47
+ if (
48
+ hasattr(self.vae.encoder, "loss_info")
49
+ and "cls_token" in self.vae.encoder.loss_info
50
+ ):
51
+ cls_token = self.vae.encoder.loss_info["cls_token"]
52
+ cls_token = cls_token.unflatten(0, (num_tiles, sample_batch_size))
53
+ self.cls_tokens.extend(token.clone() for token in cls_token)
FL2VA/video_vae/vae_processor.py ADDED
@@ -0,0 +1,234 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # Tensor pre/post-processing for the MiniMax H3 visual VAE.
3
+ import math
4
+ import numpy as np
5
+ import torch
6
+ from diffusers.utils import logging
7
+ from einops import rearrange
8
+
9
+ from .normalize import get_normalize_transform, get_denormalize_transform
10
+
11
+ logger = logging.get_logger(__name__) # pylint: disable=invalid-name
12
+
13
+
14
+ class VAEProcessor:
15
+
16
+ def __init__(
17
+ self,
18
+ *,
19
+ vae_ratio,
20
+ vae_ratio_t,
21
+ clip_length,
22
+ frame_overlap,
23
+ token_overlap,
24
+ tokens_chunk_size,
25
+ isolated_last_frame,
26
+ latent_patch_size,
27
+ crop_mode,
28
+ pixel_norm_type="imagenet",
29
+ transform=None,
30
+ transform_rev=None,
31
+ use_3d_conv=False,
32
+ ):
33
+ self.vae_ratio = vae_ratio
34
+ self.vae_ratio_t = vae_ratio_t
35
+ self.clip_length = clip_length
36
+ self.frame_overlap = frame_overlap
37
+ self.token_overlap = token_overlap
38
+ self.tokens_chunk_size = tokens_chunk_size
39
+ self.isolated_last_frame = isolated_last_frame
40
+ self.latent_patch_size = latent_patch_size
41
+ self.crop_mode = crop_mode
42
+ self.transform = transform or get_normalize_transform(pixel_norm_type)
43
+ self.transform_rev = transform_rev or get_denormalize_transform(pixel_norm_type)
44
+ self.use_3d_conv = use_3d_conv
45
+
46
+ def _ensure_list(self, data):
47
+ return data if isinstance(data, list) else [data]
48
+
49
+ def _align_to_total_patch_size(self, h, w):
50
+ total_patch_size = self.latent_patch_size * self.vae_ratio
51
+ new_h = (h // total_patch_size) * total_patch_size
52
+ new_w = (w // total_patch_size) * total_patch_size
53
+ return new_h, new_w
54
+
55
+ def _crop_to_align(self, tensor, new_h, new_w, is_video=False):
56
+ if is_video:
57
+ _, _, _, h, w = tensor.shape
58
+ else:
59
+ _, _, h, w = tensor.shape
60
+
61
+ if self.crop_mode == "center":
62
+ top = (h - new_h) // 2
63
+ left = (w - new_w) // 2
64
+ else:
65
+ top = 0
66
+ left = 0
67
+
68
+ if is_video:
69
+ return tensor[:, :, :, top : top + new_h, left : left + new_w]
70
+ else:
71
+ return tensor[:, :, top : top + new_h, left : left + new_w]
72
+
73
+ def _align_target_token(self, T, mode):
74
+ intra_tail = self.clip_length % self.vae_ratio_t
75
+ min_frames = intra_tail or self.vae_ratio_t
76
+ full_chunks = T // self.clip_length
77
+ remainder = T % self.clip_length
78
+
79
+ if remainder == 0:
80
+ return max(T, min_frames)
81
+
82
+ if mode == "pad":
83
+ aligned_r = (
84
+ math.ceil((remainder - intra_tail) / self.vae_ratio_t) * self.vae_ratio_t
85
+ + intra_tail
86
+ )
87
+ if aligned_r > self.clip_length:
88
+ return (full_chunks + 1) * self.clip_length + intra_tail
89
+ return full_chunks * self.clip_length + aligned_r
90
+ else: # trim
91
+ k = (remainder - intra_tail) // self.vae_ratio_t
92
+ if k >= 0:
93
+ target = full_chunks * self.clip_length + k * self.vae_ratio_t + intra_tail
94
+ return max(target, min_frames)
95
+ elif full_chunks > 0:
96
+ return full_chunks * self.clip_length
97
+ else:
98
+ return min_frames
99
+
100
+ def _align_target(self, T, mode, granularity):
101
+ if granularity == "chunk":
102
+ step = self.clip_length
103
+ tail = self.frame_overlap
104
+ if self.isolated_last_frame:
105
+ tail += 1
106
+
107
+ k = math.ceil((T - tail) / step) if mode == "pad" else (T - tail) // step
108
+ return max(k, 1) * step + tail
109
+
110
+ isolated_extra = 1 if self.isolated_last_frame else 0
111
+ return self._align_target_token(T - isolated_extra, mode) + isolated_extra
112
+
113
+ def align_video_length(self, video_length, mode="pad", granularity="chunk"):
114
+ target = self._align_target(video_length, mode, granularity)
115
+ delta = target - video_length
116
+ if delta > 0 and mode == "trim":
117
+ raise ValueError(
118
+ f"Cannot trim {video_length} frames to valid length {target}: "
119
+ f"not enough frames (granularity={granularity})"
120
+ )
121
+ return delta
122
+
123
+ def align_video_length_2pass(self, video_length):
124
+ """Return the leading/trailing frame pads and trailing latent drop.
125
+
126
+ This is the continuation-prefix (2-pass) alignment. The caller temporarily disables the model's normal token
127
+ drop and keeps these mirrored processor fields at zero.
128
+ """
129
+ if self.isolated_last_frame:
130
+ raise ValueError(
131
+ "align_video_length_2pass does not support isolated_last_frame"
132
+ )
133
+ if self.token_overlap != 0 or self.frame_overlap != 0:
134
+ raise ValueError(
135
+ "align_video_length_2pass requires token_drop=0 alignment"
136
+ )
137
+
138
+ leading = self.align_video_length(
139
+ video_length, mode="pad", granularity="token"
140
+ )
141
+ token_aligned = video_length + leading
142
+ trailing = self.align_video_length(
143
+ token_aligned, mode="pad", granularity="chunk"
144
+ )
145
+
146
+ if trailing > 0:
147
+ intra_tail = self.clip_length % self.vae_ratio_t
148
+ full_chunks = token_aligned // self.clip_length
149
+ remainder = token_aligned % self.clip_length
150
+ real_tokens = full_chunks * self.tokens_chunk_size
151
+ if remainder > 0:
152
+ real_tokens += (
153
+ (remainder - intra_tail) // self.vae_ratio_t + 1
154
+ )
155
+ drop_tokens = (
156
+ self.get_latent_length(token_aligned + trailing) - real_tokens
157
+ )
158
+ else:
159
+ drop_tokens = 0
160
+
161
+ return leading, trailing, drop_tokens
162
+
163
+ def get_suitable_video_length(self, video_length, verbose=False):
164
+ used_frame_length = video_length + self.align_video_length(
165
+ video_length, mode="trim", granularity="chunk"
166
+ )
167
+ if verbose:
168
+ logger.info(
169
+ f"Pick first {used_frame_length} frames from {video_length}-frame video"
170
+ )
171
+ return used_frame_length
172
+
173
+ def get_latent_length(self, video_length):
174
+ tail_frame = self.frame_overlap
175
+ tail_token = self.token_overlap
176
+ if self.isolated_last_frame:
177
+ tail_frame += 1
178
+ tail_token += 1
179
+
180
+ video_length = self.get_suitable_video_length(video_length)
181
+ latent_length = (
182
+ int((video_length - tail_frame) // self.clip_length)
183
+ * self.tokens_chunk_size
184
+ + tail_token
185
+ )
186
+ return latent_length
187
+
188
+
189
+
190
+ def transform_tensor(self, tensor):
191
+ B, T = None, None
192
+ if tensor.ndim == 5:
193
+ if tensor.shape[2] == 3:
194
+ tensor = tensor.transpose(1, 2)
195
+ B, _, T, _, _ = tensor.shape
196
+ tensor = rearrange(tensor, "b c t h w -> (b t) c h w")
197
+ elif tensor.ndim == 4:
198
+ if tensor.shape[0] == 3:
199
+ tensor = tensor.transpose(0, 1)
200
+ elif tensor.ndim == 3:
201
+ tensor = tensor.unsqueeze(0)
202
+ else:
203
+ raise ValueError(f"Unsupported tensor shape: {tensor.shape}")
204
+
205
+ tensor = self.transform(tensor)
206
+
207
+ if B is not None and T is not None:
208
+ tensor = rearrange(tensor, "(b t) c h w -> b c t h w", b=B, t=T)
209
+
210
+ return tensor.contiguous()
211
+
212
+ def revert_tensor(self, tensor):
213
+ B, T = None, None
214
+ if self.use_3d_conv:
215
+ tensor = tensor.unsqueeze(2) if tensor.ndim == 4 else tensor
216
+ B, _, T, _, _ = tensor.shape
217
+ tensor = rearrange(tensor, "b c t h w -> (b t) c h w")
218
+ tensor_rev = self.transform_rev(tensor).clamp(0, 1)
219
+ if B is not None:
220
+ tensor_rev = rearrange(tensor_rev, "(b t) c h w -> b c t h w", b=B, t=T)
221
+ return tensor_rev.contiguous()
222
+
223
+ @staticmethod
224
+ def convert_numpy_to_tensor(numpy_array, device=None):
225
+ if isinstance(numpy_array, list):
226
+ numpy_array = np.stack(numpy_array, axis=0)
227
+ numpy_array = numpy_array.astype(np.float32)
228
+ tensor = torch.from_numpy(numpy_array)
229
+ tensor = tensor.permute(0, 3, 1, 2)
230
+ tensor = tensor / 255.0
231
+ if device is not None:
232
+ tensor = tensor.to(device)
233
+ return tensor
234
+
FL2VA/video_vae/vae_vit.py ADDED
@@ -0,0 +1,380 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # SPDX-License-Identifier: Apache-2.0
2
+ # ViT3D decoder for the MiniMax H3 visual VAE (inference-only bundle).
3
+ import torch
4
+ import torch.nn as nn
5
+ import torch.distributed as dist
6
+ from diffusers.configuration_utils import ConfigMixin, register_to_config
7
+ from diffusers.models.modeling_utils import ModelMixin
8
+ from diffusers.utils import logging
9
+
10
+ from .attention import maybe_checkpoint
11
+ from .base_module import TransformerBlock, RotaryEmbeddingND
12
+ from .flash import make_block_causal_mask_mod
13
+ from .func import create_token_ids
14
+ from .parallel import get_subseq, gather_subseq, get_parallel_state
15
+
16
+ logger = logging.get_logger(__name__)
17
+
18
+
19
+ def _linear_with_module_dtype(linear, tensor, out_dtype=None):
20
+ weight = getattr(linear, "weight", None)
21
+ target_dtype = getattr(weight, "dtype", tensor.dtype)
22
+ output = linear(tensor.to(target_dtype))
23
+ if out_dtype is not None and output.dtype != out_dtype:
24
+ output = output.to(out_dtype)
25
+ return output
26
+
27
+
28
+ def _make_seq_len_mask_mod(seq_len, base_mask_mod=None):
29
+ if base_mask_mod is None:
30
+ def mask_mod(b, h, q_idx, kv_idx, seqlen_info, aux_tensors):
31
+ return (q_idx < seq_len) & (kv_idx < seq_len)
32
+
33
+ mask_mod.block_sparse_cache_key = ("seq_len", seq_len)
34
+ return mask_mod
35
+
36
+ def mask_mod(b, h, q_idx, kv_idx, seqlen_info, aux_tensors):
37
+ return (
38
+ (q_idx < seq_len)
39
+ & (kv_idx < seq_len)
40
+ & base_mask_mod(b, h, q_idx, kv_idx, seqlen_info, aux_tensors)
41
+ )
42
+
43
+ base_cache_key = getattr(base_mask_mod, "block_sparse_cache_key", None)
44
+ if base_cache_key is not None:
45
+ mask_mod.block_sparse_cache_key = ("seq_len", seq_len, base_cache_key)
46
+ if hasattr(base_mask_mod, "use_fast_sampling"):
47
+ mask_mod.use_fast_sampling = base_mask_mod.use_fast_sampling
48
+ return mask_mod
49
+
50
+
51
+
52
+
53
+
54
+
55
+ def _pack_tensors_3d(tensors, patch_size, patch_size_t):
56
+ batch_size, num_channels_tensors, temporal, height, width = tensors.shape
57
+
58
+ tensors = tensors.view(
59
+ batch_size,
60
+ num_channels_tensors,
61
+ temporal // patch_size_t,
62
+ patch_size_t,
63
+ height // patch_size,
64
+ patch_size,
65
+ width // patch_size,
66
+ patch_size,
67
+ )
68
+ tensors = tensors.permute(0, 2, 4, 6, 1, 3, 5, 7)
69
+ tensors = tensors.reshape(
70
+ batch_size,
71
+ (temporal // patch_size_t) * (height // patch_size) * (width // patch_size),
72
+ num_channels_tensors * patch_size_t * patch_size * patch_size,
73
+ )
74
+ return tensors
75
+
76
+
77
+ def _unpack_tensors_3d(tensors, patch_size, patch_size_t, temporal, height, width):
78
+ batch_size, num_patches, channels = tensors.shape
79
+ num_channels_tensors = channels // (patch_size_t * patch_size * patch_size)
80
+
81
+ tensors = tensors.view(
82
+ batch_size,
83
+ temporal // patch_size_t,
84
+ height // patch_size,
85
+ width // patch_size,
86
+ num_channels_tensors,
87
+ patch_size_t,
88
+ patch_size,
89
+ patch_size,
90
+ )
91
+ tensors = tensors.permute(0, 4, 1, 5, 2, 6, 3, 7).contiguous()
92
+ tensors = tensors.reshape(batch_size, num_channels_tensors, temporal, height, width)
93
+ return tensors
94
+
95
+
96
+ class ViTBase(ModelMixin, ConfigMixin):
97
+ """Base class for ViT Encoder and Decoder with common functionality."""
98
+
99
+ _supports_gradient_checkpointing = True
100
+ _no_split_modules = ["TransformerBlock"]
101
+ gradient_checkpointing_mode = "full"
102
+
103
+ def _set_gradient_checkpointing(self, module, value=False):
104
+ if hasattr(module, "gradient_checkpointing"):
105
+ module.gradient_checkpointing = value
106
+
107
+ def set_spatial_parallel(self, enabled):
108
+ self.spatial_parallel = enabled
109
+ if hasattr(self, "transformer_blocks"):
110
+ for block in self.transformer_blocks:
111
+ block.attn.spatial_parallel = enabled
112
+
113
+ def _init_weights(self):
114
+ def basic_init(m):
115
+ if isinstance(m, nn.Linear):
116
+ nn.init.xavier_uniform_(m.weight)
117
+ if m.bias is not None:
118
+ nn.init.constant_(m.bias, 0)
119
+
120
+ self.apply(basic_init)
121
+
122
+ def init_mask_config(self, dim, is_3d=False):
123
+ self._mask_dim = dim
124
+ self._mask_is_3d = is_3d
125
+ self.register_buffer("mask_token", torch.zeros(1, 1, dim))
126
+
127
+ def set_mask_config(self, mask_config):
128
+ self.mask_prob = mask_config.get("mask_prob", 0.0)
129
+ self.mask_enabled = self.mask_prob > 0
130
+ self.mask_style = mask_config.get("mask_style", "replace")
131
+ if self.mask_enabled and self.mask_style == "drop" and self.mask_prob < 1.0:
132
+ logger.warning("mask_style='drop' with mask_prob < 1.0")
133
+ if self._mask_is_3d:
134
+ self.temporal_scale_range = mask_config.get("temporal_scale_range", (0.3, 0.5))
135
+ self.spatial_scale_range = mask_config.get("spatial_scale_range", (0.1, 0.25))
136
+ self.min_mask_ratio = mask_config.get("min_mask_ratio", 0.75)
137
+ self.max_mask_ratio = mask_config.get("max_mask_ratio", 0.95)
138
+ else:
139
+ self.spatial_scale_range = mask_config.get("spatial_scale_range", (0.15, 0.15))
140
+ self.min_mask_ratio = mask_config.get("min_mask_ratio", 0.5)
141
+ self.max_mask_ratio = mask_config.get("max_mask_ratio", 0.75)
142
+ self.aspect_ratio_range = mask_config.get("aspect_ratio_range", (0.75, 1.5))
143
+ self.max_retries = mask_config.get("max_retries", 100)
144
+ if self.mask_enabled and self.mask_style == "drop" and getattr(self, "t_causal", False):
145
+ logger.warning("mask_style='drop' with t_causal may cause issues")
146
+ if self.mask_enabled and "mask_token" in self._buffers:
147
+ del self._buffers["mask_token"]
148
+ self.mask_token = nn.Parameter(torch.randn(1, 1, self._mask_dim) * 0.02)
149
+
150
+ def init_suffix_tokens(self, dim, num_register_tokens, has_cls_token=True):
151
+ self.num_register_tokens = num_register_tokens
152
+ if num_register_tokens > 0:
153
+ self.register_tokens = nn.Parameter(torch.randn(1, num_register_tokens, dim) * 0.02)
154
+ else:
155
+ self.register_tokens = None
156
+ if has_cls_token:
157
+ self.cls_token = nn.Parameter(torch.randn(1, 1, dim) * 0.02)
158
+
159
+ def apply_mask_preprocess(self, hidden_states, img_ids, patch_dims, num_suffix):
160
+ if self.training and self.mask_enabled:
161
+ raise NotImplementedError(
162
+ "mask modeling is not supported in this inference-only bundle"
163
+ )
164
+ return hidden_states, img_ids
165
+
166
+ def forward_transformer_blocks(self, hidden_states, rotary_pos_emb, pack_info=None):
167
+ if pack_info is None:
168
+ pack_info = {}
169
+ for block in self.transformer_blocks:
170
+ hidden_states = maybe_checkpoint(
171
+ self, block, hidden_states, rotary_pos_emb, pack_info
172
+ )
173
+ return hidden_states
174
+
175
+ def _pad_for_sp(self, hidden_states, img_ids, pack_info=None):
176
+ if pack_info is None:
177
+ pack_info = {}
178
+ if not self.spatial_parallel:
179
+ return hidden_states, img_ids, pack_info, 0
180
+
181
+ seq_len = hidden_states.shape[1]
182
+ sp_size = get_parallel_state().get("sp_size", 1)
183
+ pad_len = (-seq_len) % sp_size
184
+ if pad_len == 0:
185
+ return hidden_states, img_ids, pack_info, 0
186
+
187
+ hidden_states = torch.nn.functional.pad(hidden_states, (0, 0, 0, pad_len))
188
+ img_ids = torch.nn.functional.pad(img_ids, (0, 0, 0, pad_len))
189
+
190
+ pack_info = dict(pack_info)
191
+ base_mask_mod = pack_info.get("mask_mod")
192
+ pack_info["mask_mod"] = _make_seq_len_mask_mod(seq_len, base_mask_mod)
193
+ pack_info.pop("block_sparse", None)
194
+ return hidden_states, img_ids, pack_info, pad_len
195
+
196
+ @staticmethod
197
+ def _unpad_for_sp(hidden_states, pad_len):
198
+ if pad_len == 0:
199
+ return hidden_states
200
+ return hidden_states[:, :-pad_len, :]
201
+
202
+ def apply_mask_postprocess(self, hidden_states, num_patches):
203
+ if self.training and self.mask_enabled and self.mask_style == "drop":
204
+ raise NotImplementedError(
205
+ "mask modeling is not supported in this inference-only bundle"
206
+ )
207
+ return hidden_states
208
+
209
+
210
+
211
+
212
+
213
+
214
+
215
+
216
+ class ViT3DDecoder(ViTBase):
217
+ """Vision Transformer Video Decoder using TransformerBlock."""
218
+
219
+ @register_to_config
220
+ def __init__(
221
+ self,
222
+ patch_size: int = 16,
223
+ patch_size_t: int = 4,
224
+ t_causal: bool = False,
225
+ in_channels: int = 16,
226
+ out_channels: int = 3,
227
+ num_layers: int = 24,
228
+ heads: int = 16,
229
+ dim_head: int = 64,
230
+ norm_type: str = "layer_norm",
231
+ norm_affine: bool = True,
232
+ qk_norm_type: str = None,
233
+ qk_norm_affine: bool = False,
234
+ ffn_activation_fn: str = "gelu",
235
+ ffn_use_gated: bool = False,
236
+ rope_theta: float = 100.0,
237
+ rope_dim_ratio: float = 1.0,
238
+ bias: bool = True,
239
+ eps: float = 1e-5,
240
+ num_register_tokens: int = 4,
241
+ mask_config: dict = {},
242
+ **kwargs,
243
+ ):
244
+ super().__init__()
245
+
246
+ dim = heads * dim_head
247
+ rope_apply_dim = int(dim_head * rope_dim_ratio)
248
+
249
+ self.pos_embed = RotaryEmbeddingND(rope_apply_dim, rope_theta, n_dim=3, use_angle=True)
250
+
251
+ self.x_embedder = nn.Linear(in_channels, dim)
252
+
253
+ self.init_suffix_tokens(dim, num_register_tokens, has_cls_token=False)
254
+
255
+ self.t_causal = t_causal
256
+
257
+ self.transformer_blocks = nn.ModuleList(
258
+ [
259
+ TransformerBlock(
260
+ heads=heads,
261
+ dim_head=dim_head,
262
+ norm_type=norm_type,
263
+ norm_affine=norm_affine,
264
+ qk_norm_type=qk_norm_type,
265
+ qk_norm_affine=qk_norm_affine,
266
+ ffn_activation_fn=ffn_activation_fn,
267
+ ffn_use_gated=ffn_use_gated,
268
+ bias=bias,
269
+ eps=eps,
270
+ **kwargs,
271
+ )
272
+ for _ in range(num_layers)
273
+ ]
274
+ )
275
+
276
+ self.spatial_parallel = False
277
+ for block in self.transformer_blocks:
278
+ block.attn.spatial_parallel = False
279
+
280
+ self.norm_out = nn.LayerNorm(dim, elementwise_affine=norm_affine, eps=eps)
281
+ patch_dim = out_channels * patch_size_t * patch_size * patch_size
282
+ self.proj_out = nn.Linear(dim, patch_dim)
283
+
284
+ self.init_mask_config(dim, is_3d=True)
285
+ self.set_mask_config(mask_config)
286
+
287
+ self._init_weights()
288
+ self.gradient_checkpointing = False
289
+
290
+ if len(kwargs) > 0 and (not dist.is_initialized() or dist.get_rank() == 0):
291
+ logger.warning(f"Unused kwargs: {kwargs}")
292
+
293
+ def forward(self, x: torch.Tensor) -> torch.Tensor:
294
+ self.loss_info = {}
295
+
296
+ B, C, latent_T, latent_H, latent_W = x.shape
297
+ patch_size = self.config.patch_size
298
+ patch_size_t = self.config.patch_size_t
299
+ num_suffix = 1 + self.num_register_tokens
300
+
301
+ hidden_states = _pack_tensors_3d(x, 1, 1)
302
+ latent_size = (latent_T, latent_H, latent_W)
303
+
304
+ with torch.autocast("cuda", enabled=False):
305
+ hidden_states = _linear_with_module_dtype(self.x_embedder, hidden_states, hidden_states.dtype)
306
+
307
+ num_patches = hidden_states.shape[1]
308
+
309
+ tokens = [hidden_states]
310
+
311
+ if self.register_tokens is not None:
312
+ register_tokens = self.register_tokens.expand(B, -1, -1)
313
+ tokens.append(register_tokens)
314
+
315
+ cls_token = torch.zeros_like(hidden_states[:, 0:1, :])
316
+ tokens.append(cls_token)
317
+ hidden_states = torch.cat(tokens, dim=1)
318
+
319
+ patch_dims = [latent_T, latent_H, latent_W]
320
+ img_ids = create_token_ids(latent_size, x.device, x.dtype).expand(B, -1, -1)
321
+ suffix_ids = torch.zeros((B, num_suffix, 3), device=x.device, dtype=img_ids.dtype)
322
+ img_ids = torch.cat([img_ids, suffix_ids], dim=1)
323
+
324
+ hidden_states, img_ids = self.apply_mask_preprocess(hidden_states, img_ids, patch_dims, num_suffix)
325
+
326
+ pack_info = {}
327
+ if self.t_causal:
328
+ spatial_size = latent_H * latent_W
329
+ mask_mod = make_block_causal_mask_mod(
330
+ num_tokens=num_patches,
331
+ block_size=spatial_size,
332
+ suffix=True,
333
+ )
334
+ pack_info["mask_mod"] = mask_mod
335
+
336
+ hidden_states, img_ids, pack_info, sp_pad_len = self._pad_for_sp(hidden_states, img_ids, pack_info)
337
+
338
+ rotary_pos_emb = self.pos_embed(img_ids)
339
+
340
+ if self.spatial_parallel:
341
+ hidden_states = get_subseq(hidden_states)
342
+
343
+ for block in self.transformer_blocks:
344
+ hidden_states = maybe_checkpoint(
345
+ self, block, hidden_states, rotary_pos_emb, pack_info
346
+ )
347
+
348
+ if self.spatial_parallel:
349
+ hidden_states = gather_subseq(hidden_states)
350
+ hidden_states = self._unpad_for_sp(hidden_states, sp_pad_len)
351
+
352
+ hidden_states = self.norm_out(hidden_states)
353
+
354
+ hidden_states = self.apply_mask_postprocess(hidden_states, num_patches)
355
+
356
+ with torch.autocast("cuda", enabled=False):
357
+ output = _linear_with_module_dtype(self.proj_out, hidden_states, hidden_states.dtype)
358
+
359
+ output = output[:, :num_patches, :]
360
+
361
+ video_t = latent_size[0] * patch_size_t
362
+ video_h = latent_size[1] * patch_size
363
+ video_w = latent_size[2] * patch_size
364
+ output = _unpack_tensors_3d(output, patch_size, patch_size_t, video_t, video_h, video_w)
365
+
366
+ return output
367
+
368
+
369
+
370
+
371
+
372
+
373
+
374
+
375
+
376
+
377
+
378
+
379
+
380
+
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