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FFmpeg + ImageMagick media processing. This skill should be used when transcoding video/audio, resizing/cropping images, HLS/DASH, thumbnails, batch ops, or hardware-accelerated pipelines.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
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| name | media-processing |
| description | FFmpeg + ImageMagick media processing. This skill should be used when transcoding video/audio, resizing/cropping images, HLS/DASH, thumbnails, batch ops, or hardware-accelerated pipelines. |
| license | MIT |
Process video, audio, and images using FFmpeg and ImageMagick for conversion, optimization, streaming, and manipulation.
| Task | Tool |
|---|---|
| Video encoding/transcoding | FFmpeg |
| Audio extraction/conversion | FFmpeg |
| Live streaming (RTMP/HLS/DASH) | FFmpeg |
| Image resize/crop/convert | ImageMagick |
| Batch image processing | ImageMagick (mogrify) |
| Video thumbnails | FFmpeg |
| Image effects/watermarks | ImageMagick |
# macOS
brew install ffmpeg imagemagick
# Ubuntu/Debian
sudo apt-get install ffmpeg imagemagick
# Windows
winget install ffmpeg
winget install ImageMagick.ImageMagick
# Verify
ffmpeg -version && ffprobe -version && magick -version
# Convert format (stream copy, fast)
ffmpeg -i input.mkv -c copy output.mp4
# Re-encode with H.264
ffmpeg -i input.avi -c:v libx264 -crf 22 -c:a aac output.mp4
# Resize video to 720p
ffmpeg -i input.mp4 -vf scale=-1:720 -c:a copy output.mp4
# Extract audio
ffmpeg -i video.mp4 -vn -q:a 0 audio.mp3
# Image conversion
magick input.png -quality 85 -strip output.jpg
# Resize image
magick input.jpg -resize 800x output.jpg
# Square thumbnail
magick input.jpg -resize 200x200^ -gravity center -extent 200x200 thumb.jpg
# Batch resize
mogrify -path ./output -resize 800x -quality 85 *.jpg
# HLS stream
ffmpeg -i input.mp4 -c:v libx264 -preset fast -crf 22 \
-f hls -hls_time 6 -hls_playlist_type vod playlist.m3u8
# Video GIF
ffmpeg -i input.mp4 -vf "fps=15,scale=640:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" output.gif
-c:v — Video codec (libx264, libx265, libvpx-vp9)-crf — Quality (0-51, lower=better, 23=default)-preset — Speed/compression (ultrafast to veryslow)-b:v — Video bitrate (e.g., 2M, 2500k)-vf — Video filters-c:a — Audio codec (aac, mp3, opus)-b:a — Audio bitrate (e.g., 128k, 192k)-ar — Sample rate (44100, 48000)800x600 — Fit within (maintains aspect)800x600! — Force exact size800x600^ — Fill (may crop)800x / x600 — Width or height only50% — Scale percentageFFmpeg "Unknown encoder"
ffmpeg -encoders | grep h264
sudo apt-get install libx264-dev libx265-dev
ImageMagick "not authorized"
# Edit /etc/ImageMagick-7/policy.xml
# Change rights="none" to rights="read|write" for the format
Memory errors
ffmpeg -threads 4 input.mp4 output.mp4
magick -limit memory 2GB -limit map 4GB input.jpg output.jpg
FFmpeg:
ffmpeg/encoding-codecs.md — H.264, H.265, VP9, AV1, audio codecs, codec selectionffmpeg/encoding-quality.md — CRF, bitrate, presets, tune options, threadingffmpeg/encoding-hardware.md — NVIDIA NVENC, Intel QSV, AMD AMF, Apple VideoToolboxffmpeg/filters-video.md — Scale, crop, rotate, overlay, denoise, color, textffmpeg/filters-audio-advanced.md — Audio filters, complex filtergraphs, recipesffmpeg/streaming-hls-dash.md — HLS, multi-bitrate HLS, DASH, encryptionffmpeg/streaming-live.md — RTMP platforms, screen capture, UDP/RTP, loop streamsffmpeg/streaming-thumbnails.md — Frame extraction, sprite sheets, preview generationImageMagick:
imagemagick/editing-basics.md — Format conversion, resize, crop, thumbnails, rotationimagemagick/editing-effects.md — Blur, sharpen, color effects, borders, text, compositionimagemagick/batch-basic.md — Mogrify, resize loops, format conversion, optimizationimagemagick/batch-advanced.md — Parallel processing, watermarks, web pipelines, PythonFormats:
format-compatibility/formats.md — Supported formats, codecs, platform compatibility tablesformat-compatibility/conversions.md — Common conversion commands, migration strategies