Imported from 45ck/content-machine (experiments/agent-evals/control-news-lane/.content-machine/skills/source-media-analyze/SKILL.md). Install upstream with npx skills add 45ck/content-machine --skill source-media-analyze. Copyright stays with the author.

Source Media Analyze

Use When

• A longform source file needs local metadata before selecting, clipping, or reframing highlights.
• You need duration, dimensions, orientation, fps, and stream presence without uploading the media anywhere.
• Highlight scoring should incorporate source-level audio energy, silence, or scene-change signals.

Invocation

cat .content-machine/skills/source-media-analyze/examples/request.json | \
  node ./node_modules/@45ck/content-machine/agent/run-tool.mjs source-media-analyze

Output Contract

• Reads the local source media file.
• Writes source-media-analysis.v1.json.
• Uses local ffprobe/ffmpeg or bundled static binaries when available.
• Measures scene-change timestamps, silence gaps, audio RMS/peak, and compact normalized source scores on a best-effort basis.

Validation Checklist

• hasVideo, hasAudio, dimensions, duration, fps, and orientation are present when ffprobe can read them.
• Missing streams are warnings, not silent defaults.
• Missing ffmpeg measurement support is a warning; ffprobe metadata should still be written when possible.
• No network calls are made.