Names the domain (videos) and some actions (extract frames, short clips) with a specific tool (ffmpeg), but doesn't list more comprehensive capabilities like format conversion, time-range selection, or output options.

Describes what the skill does but completely lacks a 'Use when...' clause or any explicit trigger guidance, which per the rubric should cap completeness at 2, and since the 'what' is also only moderately detailed, this falls to a weak 2 — but given the rubric's strict guidance that missing 'Use when' caps at 2 and the 'what' is minimal, scoring at the lower end. Actually, re-reading: it does answer 'what' reasonably but 'when' is entirely missing, placing it at score 2 per the anchors.

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

The combination of video frame/clip extraction with ffmpeg is a clear, distinct niche that is unlikely to conflict with other skills. The specificity of the tool (ffmpeg) and the task (extracting frames/clips from videos) makes it highly distinguishable.

Every line earns its place. No unnecessary explanations of what ffmpeg is or how video frames work. The notes section is minimal and practical.

Provides concrete, copy-paste-ready bash commands with clear flag usage (--time, --out) and realistic file paths. Both basic and timestamp use cases are covered with executable examples.

This is a simple, single-purpose skill (extract a frame). The single action is unambiguous with clear commands. No multi-step process or destructive operations requiring validation checkpoints.

For a skill under 50 lines with no need for external references, the content is well-organized with a quick start section and concise notes. No unnecessary nesting or monolithic content.