ffmpeg
Use this skill for media processing with ffmpeg/ffprobe — inspect, convert, trim, resize, compress, extract frames/audio, replace audio, mute, make GIFs, add subtitles/overlays, and combine videos. Triggers on 'combine these videos', 'merge my clips', 'join these videos together', 'put them end to end', 'stitch the clips into one video', 'concatenate these files', 'make one long video from these parts', 'append the second video to the first', 'chain these videos', 'compress video', 'extract audio', 'resize video', 'make gif', 'remove audio', 'thumbnail', 'storyboard', 'slideshow', 'social-media crop', 'codec settings', 'crf', 'preset', 'stream mapping', 'ffmpeg troubleshooting'.
Install
npx skillscat add zester4/chusky/ffmpeg Install via the SkillsCat registry.
FFmpeg Skill
Powerful media processing using ffmpeg and ffprobe.
Common tasks
Inspect media
ffprobe -hide_banner -show_format -show_streams input.mp4Convert / compress
ffmpeg -i input.mp4 -c:v libx264 -crf 23 -preset medium -c:a aac output.mp4Trim
ffmpeg -ss 00:00:10 -to 00:00:30 -i input.mp4 -c copy trimmed.mp4Extract audio
ffmpeg -i input.mp4 -vn -c:a copy audio.aacCreate GIF
ffmpeg -i input.mp4 -vf "fps=10,scale=480:-1:flags=lanczos" -loop 0 output.gifConcatenate videos
# Create a file list.txt with: file 'clip1.mp4' etc.
ffmpeg -f concat -safe 0 -i list.txt -c copy combined.mp4Extract frames
ffmpeg -i input.mp4 -vf fps=1 frame_%04d.pngBest practices
- Prefer stream copy (
-c copy) when no re-encoding is needed - Use CRF for quality-based encoding (lower = better quality, larger file)
- Always check input properties with ffprobe first
- For social media, pay attention to resolution, aspect ratio, and duration limits
Install
npx skillscat add zester4/chusky/ffmpeg Install via the SkillsCat registry.
Repository Stars
The star count shown is for the parent repository (zester4/chusky), not this specific skill.
.chusky/skills/ffmpeg