Grok (xAI) video editing

Use Grok for edits that require generative changes to the footage itself — recoloring objects, adding physical effects (smoke, fire, glow), restyling. For compositing a known asset (logo, text, PNG/animated graphic) onto video, use the video-overlay skill instead — it's deterministic and cheaper.

Requires XAI_API_KEY in .env.

Golden rule: always trim the target region first

grok-edit full_video.mp4 chunks the entire video even with --splice-into. Never send the full video. Workflow: