Skill audit report
ffmpeg Audit report.
Video and audio processing with FFmpeg. Use for format conversion, resizing, compression, audio extraction, and preparing assets for Remotion. Triggers include converting GIF to MP4, resizing video, extracting audio, compressing files, or any media transformation task.
OpenAgentSkill Trust Score
OpenAgentSkill Trust Score
The Trust Score helps an agent decide whether a skill is safe enough to shortlist before installation.
GitHub adoption
PASS100
56K GitHub stars
Stars/forks activity
PASS100
56K stars, 6.9K forks; issue activity unavailable in current metadata
Recent maintenance
PASS88
2mo since push
License clarity
PASS86
AGPL-3.0
README/SKILL.md completeness
INFO76
Public metadata needs stronger README/SKILL.md context
Dependency/runtime risk
INFO64
command execution surface, network or browser surface
Install availability
PASS92
npx skills add calesthio/OpenMontage --skill ffmpeg
Install command safety
PASS92
standard package or runtime install path
Permission surface
WARN48
shell or command execution, filesystem or document access
Repository evidence
PASS86
https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg
Review status
INFO66
AI review data available
Agent Proven outcomes
INFO54
No agent outcome data yet
Checks
Install and adoption review
Install path
92
npx skills add calesthio/OpenMontage --skill ffmpeg
Repository
88
https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/ffmpeg
License
86
AGPL-3.0
Maintenance
88
2mo since push
AI review
55
SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.
README/SKILL.md completeness
84
Usable description available
Dependency risk
64
command execution surface, network or browser surface
Install command safety
92
standard package or runtime install path
Permission surface
48
shell or command execution, filesystem or document access
Stars/forks activity
100
56K stars, 6.9K forks; issue activity unavailable in current metadata
Adoption
88
56K GitHub stars
Warnings
- Permission surface may require sandboxing
- SKILL.md does not include a prerequisites section stating that ffmpeg and ffprobe must be installed, so agents may fail with confusing 'command not found' errors.
- No security guidance is provided about quoting/escaping user-controlled filenames or treating media inputs as untrusted, which is important when an LLM generates shell commands.
- The skill does not mention output overwrite behavior; depending on environment, ffmpeg may prompt or overwrite files, and agents should explicitly use -n or -y as appropriate.
- Permission surface needs review: shell or command execution, filesystem or document access
- Permission surface: shell or command execution, filesystem or document access
Method
This report combines public metadata, AI review output, repository freshness, install readiness, OpenAgentSkill events, quality scoring, trust checks, and the agent safety gate. It is not a full source-code security review.
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