video-analyzer

Yes, you can analyze local video files by providing the file path instead of a URL. The analyzer processes the local file through ffmpeg compression and the Files API to generate timestamped Chinese analysis notes.

The analyzer uses the Responses API with an input_video reference and file_id to parse the video deterministically. This mechanism ensures accurate extraction of key points, on-screen text, formulas, scenes, and actions into structured notes.

The analyzer is best suited for long-form content where understanding detailed explanations, summarizing key scenes, and extracting structured takeaways with timeline timestamps are needed. It outputs comprehensive Chinese notes rather than brief overviews.

A key limitation of using the Files API for video analysis is that videos must be compressed to an analysis-friendly size beforehand. Extremely long videos might lose fine details during the 720p compression step before processing.