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trails/.claude/skills/cmux-browser/references/video-recording.md
Ullrich Schäfer b4c0ee954d
Add cmux skills (browser, debug-windows, markdown, core) 
Skills for cmux terminal integration: browser automation for visual
verification, debug windows, markdown viewer, and core topology control.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-22 12:25:54 +01:00

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Video Recording

Status and alternatives for capturing browser automation evidence in cmux.

Related: commands.md, SKILL.md

Contents

Current Status

cmux browser currently does not expose a built-in video recording command.

Why: cmux browser automation runs on WKWebView, and the agent-browser style recording pipeline is Chrome/CDP-specific.

Recommended Alternatives

1. Step Screenshots

cmux browser surface:7 screenshot > /tmp/step1.b64
cmux browser surface:7 click e3 --snapshot-after --json
cmux browser surface:7 screenshot > /tmp/step2.b64

2. Snapshot Timeline

cmux browser surface:7 snapshot --interactive > /tmp/snap-1.txt
cmux browser surface:7 click e3 --snapshot-after --json > /tmp/action-1.json
cmux browser surface:7 snapshot --interactive > /tmp/snap-2.txt

3. macOS Window Capture (external)

Use an external screen recorder if full-motion capture is required.

Use Cases

  • Debug flaky browser automation.
  • Produce artifacts for CI logs.
  • Document flow changes between releases.

Best Practices

  1. Capture snapshot before and after each mutating action.
  2. Add --snapshot-after on clicks/fills/types that change state.
  3. Keep artifacts grouped by timestamp/run id.