agent-motion

Described timeline — cuts, motion, steps, flicker, flashes and gradual change, each with a timestamp, a region and a plain-English description

Finds the thing with no pixels — a stall, where continuous animation stopped and resumed, is invisible to anything that only looks for change

Sub-threshold detection — gradual fades too slow to clear the frame-to-frame threshold are still reported

Activity maps — a PNG where every pixel keeps its source x,y: red is how much it changed, green when, blue how often

Contact sheets — one labelled PNG of many real frames, so you can see the whole recording in a single image

Pixel-exact compare — how two moments differ, with the difference drawn

Honest about fit — a suitability verdict flags panning cameras, scrolling pages and ambient motion instead of returning confident nonsense

check exits non-zero — assert conditions so a visual regression breaks a build

MCP server built in — the same commands over MCP for clients that do not speak shell

next_steps and limits on every result — runnable follow-up commands, and what the run could not have seen

One runtime dependency — ffmpeg and ffprobe on PATH, or pointed at explicitly with --ffmpeg / --ffprobe; no credentials, no network, no service

Every entry point guards on the executable it runs — a missing or wrong ffmpeg fails with a clear message up front, not partway through a decode