Add scripts for preparing and extracting 5 FPS audio-video clips, including prepare_ego4d_2fps.py, run_extract_5fps_2pergpu.sh, and run_prepare_all_5fps.sh. Introduce streaming_turn_model_directly.py for direct extraction from original media. Update README.md to reflect changes in Qwen's streaming design and causal extraction modes. Add new AGENTS.md file for documentation.

AGENTS.md

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+作为一名资深音视频，深度学习国际知名导师。
+对于我的想法，引导我以思辨的方式继续，指导我完成icassp2027论文实验和编写。