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video-frames

Extract frames or short clips from videos using ffmpeg.

83

1.31x
Quality

76%

Does it follow best practices?

Impact

100%

1.31x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./openclaw/skills/video-frames/SKILL.md

The canonical home for this skill is video-frames in Hung-Reo/hungreo-openclaw

SKILL.md
Quality
Evals
Security

Quality

Content

100%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is an exemplary lean skill: concise, fully executable, single-action clear, with implementation correctly externalized to a bundled script. Nothing material is missing for a single-purpose ffmpeg frame extractor.

DimensionReasoningScore

Conciseness

The body is lean — a one-line capability statement, two copy-paste commands, and three terse notes — with no padding or explanation of concepts Claude already knows; every token earns its place.

5 / 5

Actionability

It gives fully executable, copy-paste-ready commands referencing the real frame.sh script with concrete args and outputs, covering the two common cases (first frame, frame at a timestamp).

5 / 5

Workflow Clarity

This is a simple single-purpose skill where the single action (run frame.sh with args) is unambiguous; the script itself validates inputs (file-exists, required --out), and frame extraction is neither destructive nor batch, so the simple-skill exception applies.

5 / 5

Progressive Disclosure

Under 50 lines with well-organized sections (Quick start, Notes) and the implementation correctly split into a one-level-deep bundled script (scripts/frame.sh) referenced via {baseDir}; no further references are needed.

5 / 5

Total

20

/

20

Passed

Description

53%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description states a clear capability but lacks an explicit trigger/use-when clause and natural keyword variants, so it lands mid-scale on most dimensions. Adding a 'Use when...' clause and file-extension keywords would notably improve it.

Suggestions

Add an explicit trigger clause, e.g. 'Use when the user asks to pull a frame or clip from a video, make a thumbnail, or inspect a moment in a video.'

Include natural synonyms and file extensions users say: 'thumbnails', 'screenshot a frame', '.mp4', '.mov'.

Broaden the action list to mention batch/thumbnail generation to lift specificity toward comprehensive coverage.

DimensionReasoningScore

Specificity

"Extract frames or short clips from videos" names the video domain plus two concrete actions (frames, short clips), but coverage is not comprehensive — e.g. thumbnails, batch extraction, and conversion are absent.

3 / 5

Completeness

The "what" is clear (extract frames/clips via ffmpeg) but there is no "Use when..." or equivalent trigger clause, so the "when" is missing — this caps completeness at 3 per the rubric guideline.

3 / 5

Trigger Term Quality

It surfaces natural terms like "frames", "short clips", and "videos", but omits common synonyms and file extensions users say ("thumbnails", "screenshot", .mp4, .mov), leaving keyword coverage partial.

3 / 5

Distinctiveness Conflict Risk

"Extract frames or short clips from videos using ffmpeg" carves a fairly distinct niche with low conflict risk, though it could overlap slightly with a general video-editing skill.

4 / 5

Total

13

/

20

Passed

Validation

81%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation13 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

metadata_field

'metadata' should map string keys to string values

Warning

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

13

/

16

Passed

Repository
trpc-group/trpc-agent-go
Reviewed

Table of Contents

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