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docs/source/en/model_doc/pe_video.md
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docs/source/en/model_doc/pe_video.md
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<!--Copyright 2025 The HuggingFace Team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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<<<<<<< Updated upstream
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*This model was released on 2025-04-17 and added to Hugging Face Transformers on 2025-12-16.*
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=======
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*This model was published in HF papers on 2025-04-17 and contributed to Hugging Face Transformers on 2025-12-16.*
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>>>>>>> Stashed changes
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# PE Video
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[PE Video](https://huggingface.co/papers/2504.13181) is the video branch of Meta's Perception Encoder family. It contrastively aligns video clips with text into a shared embedding space, enabling zero-shot video classification and video–text retrieval from a single pretrained backbone.
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The encoder's rotary embeddings and patch embedder treat the temporal axis as a first-class dimension, so variable-length clips can be encoded without tiling each frame independently.
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You can find all the official PE Audio checkpoints under the [perception-encoder-audio-visual](https://huggingface.co/collections/facebook/perception-encoder-audio-visual) collection.
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## Quickstart
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```py
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import torch
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from transformers import AutoProcessor, PeVideoModel
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from transformers.video_utils import load_video
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processor = AutoProcessor.from_pretrained("facebook/pe-av-large")
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model = PeVideoModel.from_pretrained(
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"facebook/pe-av-large",
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device_map="auto",
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)
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video, _ = load_video("https://huggingface.co/datasets/hf-internal-testing/fixtures_videos/resolve/main/tennis.mp4")
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labels = ["a person playing tennis", "a person cooking", "a cat sleeping"]
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video_inputs = processor.video_processor(video, num_frames=16, return_tensors="pt").to(model.device)
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text_inputs = processor.tokenizer(labels, padding=True, return_tensors="pt").to(model.device)
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inputs = {**video_inputs, **text_inputs}
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with torch.no_grad():
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outputs = model(**inputs)
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probs = outputs.logits_video_text.sigmoid()
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print({label: p.item() for label, p in zip(labels, probs[0])})
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```
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## Usage tips and notes
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- Variable-length videos use `padding_mask_videos` (not `attention_mask`). The video processor only pads and returns this mask when `return_tensors` is set — without it you get a list of per-clip tensors and no mask.
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- Pass `num_frames` to the video processor for fixed-length uniform sampling across `[0, total_frames-1]`. Omit it to fall back to fps-based sampling from the base class. Checkpoints are usually trained at a specific frame count, so match what the checkpoint expects.
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- Encoder input is `pixel_values_videos`. The encoder's `main_input_name` is `"pixel_values_videos"` while the full model's is `"input_ids"`, which matters when routing through generic utilities that inspect `main_input_name`.
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## PeVideoConfig
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[[autodoc]] PeVideoConfig
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## PeVideoEncoderConfig
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[[autodoc]] PeVideoEncoderConfig
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## PeVideoVideoProcessor
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[[autodoc]] PeVideoVideoProcessor
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## PeVideoProcessor
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[[autodoc]] PeVideoProcessor
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## PeVideoEncoder
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[[autodoc]] PeVideoEncoder
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- forward
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## PeVideoModel
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[[autodoc]] PeVideoModel
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- forward
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