Names the domain (videos) and some actions (extract frames, short clips), and mentions the tool (ffmpeg), but doesn't list more comprehensive actions like specifying time ranges, output formats, or frame rate selection.

Describes what the skill does but has no 'Use when...' clause or equivalent explicit trigger guidance. Per the rubric, a missing 'Use when...' clause caps completeness at 2, and since the 'when' is entirely absent, this scores a 1.

Includes relevant keywords like 'frames', 'clips', 'videos', and 'ffmpeg' which users might naturally say, but misses common variations like 'screenshot from video', 'thumbnails', 'video extraction', 'keyframes', or file extensions like '.mp4', '.avi'.

The combination of video frame/clip extraction with ffmpeg is a clear, specific niche that is unlikely to conflict with other skills. The mention of ffmpeg and the specific actions of extracting frames or clips makes this quite distinctive.

Very lean and efficient. No unnecessary explanations of what ffmpeg is or how video formats work. Every line serves a purpose.

Provides concrete, copy-paste ready bash commands with clear flag usage (--time, --out) and specific examples for different use cases (first frame, timestamp, format choice).

This is a simple, single-purpose skill (extract a frame). The two commands are unambiguous, and the notes section provides clear guidance on when to use each option. No multi-step destructive operations require validation checkpoints.

For a simple skill under 50 lines with a single task, the content is well-organized with a quick start section and notes section. No need for external references given the scope.