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media-processing Process multimedia files with FFmpeg (video/audio encoding, conversion, streaming, filtering, hardware acceleration) and ImageMagick (image manipulation, format conversion, batch processing, effects, composition). Use when converting media formats, encoding videos with specific codecs (H.264, H.265, VP9), resizing/cropping images, extracting audio from video, applying filters and effects, optimizing file sizes, creating streaming manifests (HLS/DASH), generating thumbnails, batch processing images, creating composite images, or implementing media processing pipelines. Supports 100+ formats, hardware acceleration (NVENC, QSV), and complex filtergraphs.
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name media-processing description Process multimedia files with FFmpeg (video/audio encoding, conversion, streaming, filtering, hardware acceleration) and ImageMagick (image manipulation, format conversion, batch processing, effects, composition). Use when converting media formats, encoding videos with specific codecs (H.264, H.265, VP9), resizing/cropping images, extracting audio from video, applying filters and effects, optimizing file sizes, creating streaming manifests (HLS/DASH), generating thumbnails, batch processing images, creating composite images, or implementing media processing pipelines. Supports 100+ formats, hardware acceleration (NVENC, QSV), and complex filtergraphs. license MIT
Media Processing Skill
Process video, audio, and images using FFmpeg and ImageMagick command-line tools for conversion, optimization, streaming, and manipulation tasks.
When to Use This Skill
Use when:
Converting media formats (video, audio, images)
Encoding video with codecs (H.264, H.265, VP9, AV1)
Processing images (resize, crop, effects, watermarks)
Extracting audio from video
Creating streaming manifests (HLS/DASH)
Generating thumbnails and previews
Batch processing media files
Optimizing file sizes and quality
Applying filters and effects
Creating composite images or videos
Tool Selection Guide
FFmpeg: Video/Audio Processing
Use FFmpeg for:
Video encoding, conversion, transcoding
Audio extraction, conversion, mixing
Live streaming (RTMP, HLS, DASH)
Video filters (scale, crop, rotate, overlay)
Hardware-accelerated encoding
Media file inspection (ffprobe)
Frame extraction, concatenation
Codec selection and optimization
ImageMagick: Image Processing
Image format conversion (PNG, JPEG, WebP, GIF)
Resizing, cropping, transformations
Batch image processing (mogrify)
Visual effects (blur, sharpen, sepia)
Text overlays and watermarks
Image composition and montages
Color adjustments, filters
Thumbnail generation
Decision Matrix Task Tool Why Video encoding FFmpeg Native video codec support Audio extraction FFmpeg Direct stream manipulation Image resize ImageMagick Optimized for still images Batch images ImageMagick mogrify for in-place edits Video thumbnails FFmpeg Frame extraction built-in GIF creation FFmpeg or ImageMagick FFmpeg for video source, ImageMagick for images Streaming FFmpeg Live streaming protocols Image effects ImageMagick Rich filter library
Installation
macOS brew install ffmpeg imagemagick
Ubuntu/Debian sudo apt-get install ffmpeg imagemagick
Windows
winget install ffmpeg
winget install ImageMagick.ImageMagick
Verify Installation ffmpeg -version
ffprobe -version
magick -version
convert -version
Quick Start Examples
Video Conversion
ffmpeg -i input.mkv -c copy output.mp4
ffmpeg -i input.avi -c:v libx264 -crf 22 -c:a aac output.mp4
ffmpeg -i input.mp4 -vf scale=-1:720 -c:a copy output.mp4
Audio Extraction
ffmpeg -i video.mp4 -vn -c:a copy audio.m4a
ffmpeg -i video.mp4 -vn -q:a 0 audio.mp3
Image Processing
magick input.png output.jpg
magick input.jpg -resize 800x600 output.jpg
magick input.jpg -resize 200x200^ -gravity center -extent 200x200 thumb.jpg
Batch Image Resize
mogrify -resize 800x -quality 85 *.jpg
mogrify -path ./output -resize 800x600 *.jpg
Video Thumbnail
ffmpeg -ss 00:00:05 -i video.mp4 -vframes 1 -vf scale=320:-1 thumb.jpg
HLS Streaming
ffmpeg -i input.mp4 \
-c:v libx264 -preset fast -crf 22 -g 48 \
-c:a aac -b:a 128k \
-f hls -hls_time 6 -hls_playlist_type vod \
playlist.m3u8
Image Watermark
magick input.jpg watermark.png -gravity southeast \
-geometry +10+10 -composite output.jpg
Common Workflows
Optimize Video for Web
ffmpeg -i input.mp4 \
-c:v libx264 -preset slow -crf 23 \
-c:a aac -b:a 128k \
-movflags +faststart \
output.mp4
Create Responsive Images
for size in 320 640 1024 1920; do
magick input.jpg -resize ${size} x -quality 85 "output-${size} w.jpg"
done
Extract Video Segment
ffmpeg -i input.mp4 -ss 00:01:30 -to 00:03:00 \
-c:v libx264 -c:a aac output.mp4
Batch Image Optimization
mogrify -path ./optimized -format jpg -quality 85 -strip *.png
Video GIF Creation
ffmpeg -i input.mp4 -vf "fps=15,scale=640:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" output.gif
Image Blur Effect
magick input.jpg -gaussian-blur 0x8 output.jpg
Advanced Techniques
Multi-Pass Video Encoding
ffmpeg -y -i input.mkv -c:v libx264 -b:v 2600k -pass 1 -an -f null /dev/null
ffmpeg -i input.mkv -c:v libx264 -b:v 2600k -pass 2 -c:a aac output.mp4
Hardware-Accelerated Encoding
ffmpeg -hwaccel cuda -i input.mp4 -c:v h264_nvenc -preset fast -crf 22 output.mp4
ffmpeg -hwaccel qsv -c:v h264_qsv -i input.mp4 -c:v h264_qsv output.mp4
Complex Image Pipeline
magick input.jpg \
-resize 1000x1000^ \
-gravity center \
-crop 1000x1000+0+0 +repage \
-bordercolor black -border 5x5 \
-brightness-contrast 5x10 \
-quality 90 \
output.jpg
Video Filter Chains
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "[0:v]scale=1280:720,hqdn3d[v];[v][1:v]overlay=10:10" \
-c:a copy output.mp4
Animated GIF from Images
magick -delay 100 -loop 0 frame*.png animated.gif
magick animated.gif -fuzz 5% -layers Optimize optimized.gif
Media Analysis
Inspect Video Properties
ffprobe -v quiet -print_format json -show_format -show_streams input.mp4
ffprobe -v error -select_streams v:0 \
-show_entries stream=width,height \
-of csv=s=x:p=0 input.mp4
Image Information
identify image.jpg
identify -verbose image.jpg
identify -format "%f: %wx%h %b\n" image.jpg
Performance Tips
Use CRF for quality control - Better than bitrate for videoCopy streams when possible - Avoid re-encoding with -c copyHardware acceleration - GPU encoding 5-10x fasterAppropriate presets - Balance speed vs compressionBatch with mogrify - In-place image processingStrip metadata - Reduce file size with -stripProgressive JPEG - Better web loading with -interlace PlaneLimit memory - Prevent crashes on large batchesTest on samples - Verify settings before batchParallel processing - Use GNU Parallel for multiple files
Reference Documentation Detailed guides in references/:
ffmpeg-encoding.md - Video/audio codecs, quality optimization, hardware accelerationffmpeg-streaming.md - HLS/DASH, live streaming, adaptive bitrateffmpeg-filters.md - Video/audio filters, complex filtergraphsimagemagick-editing.md - Format conversion, effects, transformationsimagemagick-batch.md - Batch processing, mogrify, parallel operationsformat-compatibility.md - Format support, codec recommendations
Common Parameters
FFmpeg Video
-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
FFmpeg Audio
-c:a - Audio codec (aac, mp3, opus)-b:a - Audio bitrate (e.g., 128k, 192k)-ar - Sample rate (44100, 48000)
ImageMagick Geometry
800x600 - Fit within (maintains aspect)800x600! - Force exact size800x600^ - Fill (may crop)800x - Width onlyx600 - Height only50% - Scale percentage
Troubleshooting
ffmpeg -encoders | grep h264
sudo apt-get install libx264-dev libx265-dev
ImageMagick "not authorized"
sudo nano /etc/ImageMagick-7/policy.xml
ffmpeg -threads 4 input.mp4 output.mp4
magick -limit memory 2GB -limit map 4GB input.jpg output.jpg
Resources 