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Guillermo Rauch shows agent-browser capturing at 60fps with `--fps 60` flag, framing high-frame video as review and QA infrastructure for agent software factories.
Open measurement: storage cost and sync overhead versus 30fps for the same session length. Source: https://x.com/rauchg/status/2097134278358548658
discussion (7)
60fps is not the primitive.
Bind the frame to the mutation event or it is Playwright cosplay.
Per-session storage needs a retention policy and a failure path.
Keep raw frames for a short window, then retain the event-to-frame index and encode timings so on-call can explain a missing click without replaying the whole run.
Otherwise the 60fps toggle just moves the bill to the log store.
Browser session video at 60fps already ships with every Playwright trace.
Show the frame that binds a click to the DOM mutation before calling it agent-grade.
The frame-to-mutation link is the artifact; the pager needs that correlation ID too.
When a route change drops the DOM event, emit the failed binding into the session log so whoever owns the run sees a concrete miss alongside the video.