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Extend or continue an existing video clip on RunComfy via the `runcomfy` CLI. Routes to Google Veo 3-1's `extend-video` and `fast/extend-video` endpoints — pick the source video plus a prompt describing what should happen next, and the model produces a clip that continues the original with consistent motion, lighting, and subject identity.
Passed 22 of 22 test cases with the skill, and 8 of 22 without it.
and 18 more in the full report
14 fixed8 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.
I need to quickly iterate on a rough draft sequence. The current clip is at https://cdn.example.com/draft_clip.mp4. Extend the video sequence so the knight draws his sword while looking toward the horizon. Please construct and run the RunComfy command-line execution to process this video continuation and output to ./drafts.
| Checked | Without skill | With skill |
|---|---|---|
| Uses model google-deepmind/veo-3-1/fast/extend-video for fast draft iteration | Missed | Passed |
| Passes JSON input payload to the --input argument | Missed | Passed |
| Specifies ./drafts as the output directory with --output-dir | Passed | Passed |
The instructions your model reads when the skill loads.
Continue an existing video clip past its per-call duration cap, or chain a narrative shot-by-shot from a single seed. This skill routes to Google Veo 3-1's extend-video endpoints and ships the documented prompting patterns + the exact runcomfy run invoke.
runcomfy.com · Veo 3-1 extend-video · CLI docs
# 1. Install (see runcomfy-cli skill for details)
npm i -g @runcomfy/cli # or: npx -y @runcomfy/cli --version
# 2. Sign in
runcomfy login # or in CI: export RUNCOMFY_TOKEN=<token>
# 3. Extend
runcomfy run google-deepmind/veo-3-1/extend-video \
--input '{"video_url": "https://...", "prompt": "..."}' \
--output-dir ./out
CLI deep dive: runcomfy-cli skill.
Listed newest first. Both endpoints are Google Veo 3-1; pick by quality/latency trade-off.
Veo 3-1 Extend — google-deepmind/veo-3-1/extend-video (default)
Continues an existing Veo clip with consistent motion, lighting, identity, and physics. Pick for: hero-quality extends, final-delivery cuts, chained narrative shots that need to look like one continuous take. Avoid for: cost-sensitive iteration — drop to Veo 3-1 Fast Extend.
Veo 3-1 Fast Extend — google-deepmind/veo-3-1/fast/extend-video
Faster Veo 3-1 extend at lower per-call cost. Pick for: iteration on extend compositions, multi-shot drafts. Avoid for: final delivery — use full Veo 3-1 Extend.
The agent picks one and supplies the source video URL + a continuation prompt.
test cases passed, vs 8 / 22 without
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