Codex Computer Use auto-edits a sub-1-minute video in 27 minutes: promising but slow
vista8 · x · 2026-10-11
The author tested Codex's Computer Use capability by having it drive CapCut (Jianying) to edit a video automatically. The result: a video under one minute long took 27 minutes to edit.
- Verdict: it works, but the speed is unbearable — showing Computer Use is already viable for complex desktop GUI workflows, with efficiency as the main bottleneck.
- Next step: the author plans to write a custom Skill covering the full recording-to-editing pipeline, bypassing frame-by-frame GUI operations for a major speedup.
A useful reference for anyone building video automation: agent-driven GUI editors are fine for prototyping workflows today, but production use still needs scripted workflow encapsulation.
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