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Understand video content locally using ffmpeg frame extraction and Whisper transcription. No API keys needed.
Passed 16 of 19 test cases with the skill, and 6 of 19 without it.
and 14 more in the full report
12 fixed7 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
Extract codec keyframes from `vlog.mp4` quietly into `vlog_keyframes.json` without progress output.
| Checked | Without skill | With skill |
|---|---|---|
| Invokes python3 skills/video-understand/scripts/understand_video.py vlog.mp4 | Missed | Passed |
| Combines keyframe mode with quiet mode and output file flags | Passed | Passed |
The instructions your model reads when the skill loads.
Understand video content locally using ffmpeg for frame extraction and Whisper for transcription. Fully offline, no API keys required.
ffmpeg + ffprobe (required): brew install ffmpegopenai-whisper (optional, for transcription): pip install openai-whisper# Scene detection + transcribe (default)
python3 skills/video-understand/scripts/understand_video.py video.mp4
# Keyframe extraction
python3 skills/video-understand/scripts/understand_video.py video.mp4 -m keyframe
# Regular interval extraction
python3 skills/video-understand/scripts/understand_video.py video.mp4 -m interval
# Limit frames extracted
python3 skills/video-understand/scripts/understand_video.py video.mp4 --max-frames 10
# Use a larger Whisper model
python3 skills/video-understand/scripts/understand_video.py video.mp4 --whisper-model small
# Frames only, skip transcription
python3 skills/video-understand/scripts/understand_video.py video.mp4 --no-transcribe
# Quiet mode (JSON only, no progress)
python3 skills/video-understand/scripts/understand_video.py video.mp4 -q
# Output to file
python3 skills/video-understand/scripts/understand_video.py video.mp4 -o result.json
| Flag | Description |
test cases passed, vs 6 / 19 without
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