FFmpeg Video Analysis Extract frames from video files with ffmpeg. Delegate frame reading to sub-agents to preserve the main context window. Synthesise a structured timestamped summary from text-only sub-agent reports. Architecture: Context-Efficient Sub-Agent Pipeline Problem : Reading dozens of images into the main conversation context consumes most of the context window, leaving little room for synthesis and follow-up. Solution : A 3-phase pipeline: Images only ever exist inside sub-agent contexts. The main agent only reads lightweight text files. This cuts context usage by 90%. 1. Prerequ…