| name | ugc-fixloop |
| description | the UGC fix-loop toolkit — surgically re-render a bad window/beat of a single-take UGC master (stitch_replacement.py, pure FFmpeg) and GPT cross-model review a Seedance prompt before render (vet_seedance_prompt.py, routed through the openai-proxy). Fetch it into a one-shot UGC recipe so both scripts resolve on any machine and the vet call bills the Ads agent. |
| status | active |
ugc-fixloop
The UGC fix-loop toolkit. The one-shot UGC video recipes (create-ugc-*-video-from-refs)
render a single continuous Seedance 2.0 reference-to-video master with native lip-synced
audio. This capability ships the two scripts those recipes run, so they exist on the remote
machine (fetched into /tmp/gooseworks-scripts/ugc-fixloop/).
Any re-render of a replacement clip goes through the same proxy path the recipe uses for
the take (create-video-fal / fal-proxy), NEVER a direct fal.run call.
Env / deps
stitch_replacement.py — no API key, no network. Needs ffmpeg + ffprobe on PATH (all local FFmpeg).vet_seedance_prompt.py — routes through the GooseWorks openai-proxy (<api_base>/api/internal/openai-proxy/v1/chat/completions), reading creds from ~/.gooseworks/credentials.json — no direct OpenAI call, no local key; the call bills the Ads agent. Exits 3 if the proxy/creds are unavailable so the recipe can fall back to an inline self-review (the vet is advisory, not a gate).
Run — vet_seedance_prompt.py (GPT cross-model prompt review)
A deliberately NON-Claude second opinion on the Seedance prompt before you spend the render
(Claude reviewing its own prompt is a weaker signal). Takes the prompt as an argument:
vet_seedance_prompt.py --prompt-file working/seedance-prompt.txt \
[--brief "one-line intent"] [--refs "@Image1=avatar; @Image2=product; @Image3=env"] \
[--words 28] [--out working/seedance-review.md]
Prints + saves the structured review (verdict, line edits, word budget, consistency risk).
Run — stitch_replacement.py (surgical beat/window swap, deterministic)
Replaces one segment of the master on the VIDEO track only; the master's audio (VO + ambience)
plays straight through, so lip-sync on talking beats is never touched. Output is re-encoded
H.264 / yuv420p at the master's fps + resolution.
Required: --master M.mp4 --replacement R.mp4 --output O.mp4. Pick the window ONE of two ways:
# By beat (1-indexed segment between auto-detected scene cuts):
stitch_replacement.py --master M.mp4 --replacement R.mp4 --output O.mp4 --replace-beat 2
# By explicit window (seconds):
stitch_replacement.py --master M.mp4 --replacement R.mp4 --output O.mp4 \
--window-start 4.21 --window-end 8.75 --fit stretch
All args:
--master (required) — the single-take master mp4.--replacement (required) — the re-rendered silent replacement clip (generated via create-video-fal).--output (required) — output mp4 path.--window-start / --window-end (float seconds) — explicit hole to replace.--replace-beat (int, 1-indexed) — pick the segment between detected scene cuts.--scene-threshold (float, default 0.3) — scene-cut sensitivity for --replace-beat.--fit {stretch,trim,freeze} (default stretch) — reconcile replacement length to the hole.--dry-run — print the ffmpeg command without running.
Warns if output duration drifts >0.15s from the master (audio-sync check).
