video-understanding

Analyze a video into a structured understanding index: scene detection, ASR transcript, per-scene visual (VLM) analysis, silence windows, a fused timeline, and a narration-writing brief. Use to understand / index / summarize what happens in a video, or as the first stage of the video-recap bundle before writing narration. Input: a video file. Output: scenes.json, asr_result.json, vlm_analysis.json, silence_periods.json, timeline_fusion.json, agent_narration_brief.md. 触发词: 视频理解, 视频分析, 视频索引, video understanding, analyze video, 看懂视频.