edmonddantesj AOI Demo Clip Maker (macOS)
S-DNA: AOI-2026-0215-SDNA-CLIP01
What this is
A terminal-only (public-safe) utility skill to create hackathon demo clips on macOS.
It wraps ffmpeg/ffprobe to:
- list capture devices (avfoundation)
- record a screen for N seconds
- crop the top bar (menu/title)
- trim clips
- use simple presets
What this is NOT
- No YouTube upload
- No form submission
- No external posting
- No secret handling
Requirements
- macOS
ffmpegandffprobeinstalled- Screen Recording permission granted to your terminal app
Commands
1) List devices (avfoundation)
aoi-clip devices
2) Record (screen capture)
# pixel_format auto-fallback is enabled by default
# (tries: uyvy422 → nv12 → yuyv422 → 0rgb → bgr0)
aoi-clip record --out tempo_demo_raw.mp4 --duration 15 --fps 30 --screen "Capture screen 0"
# optionally force a specific pixel format
# aoi-clip record --out tempo_demo_raw.mp4 --duration 15 --fps 30 --screen "Capture screen 0" --pixel uyvy422
3) Crop top bar
# explicit crop
aoi-clip crop --in tempo_demo_raw.mp4 --out tempo_demo_crop.mp4 --top 150
# auto-recommend top crop based on video height (still applies crop, but chooses a value)
aoi-clip crop --in tempo_demo_raw.mp4 --out tempo_demo_crop.mp4 --top auto
4) Trim
aoi-clip trim --in tempo_demo_crop.mp4 --out tempo_demo_15s.mp4 --from 0 --to 15
5) Preset: terminal
aoi-clip preset terminal --out demo.mp4
Security / Audit posture
This skill runs local ffmpeg/ffprobe only, using a strict allowlist of binaries and arguments.
Release governance (public)
We publish AOI skills for free and keep improving them. Every release must pass our Security Gate and include an auditable changelog. We do not ship updates that weaken security or licensing clarity. Repeated violations trigger progressive restrictions (warnings → publish pause → archive).
Support
- Issues / bugs / requests: https://github.com/edmonddantesj/aoi-skills/issues
- Please include the skill slug:
aoi-demo-clip-maker
License
MIT