98 lines
2.8 KiB
Markdown
98 lines
2.8 KiB
Markdown
---
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name: ck:media-processing
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description: Process media with FFmpeg (video/audio), ImageMagick (images), RMBG (AI background removal). Use for encoding, format conversion, filters, thumbnails, batch processing, HLS/DASH streaming.
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license: MIT
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argument-hint: "[input-file] [operation]"
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metadata:
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author: claudekit
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version: "1.0.0"
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---
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# Media Processing Skill
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Process video, audio, and images using FFmpeg, ImageMagick, and RMBG CLI tools.
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**IMPORTANT:** Invoke "/ck:project-organization" skill to organize the outputs.
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## Tool Selection
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| Task | Tool | Reason |
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|------|------|--------|
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| Video encoding/conversion | FFmpeg | Native codec support, streaming |
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| Audio extraction/conversion | FFmpeg | Direct stream manipulation |
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| Image resize/effects | ImageMagick | Optimized for still images |
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| Background removal | RMBG | AI-powered, local processing |
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| Batch images | ImageMagick | mogrify for in-place edits |
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| Video thumbnails | FFmpeg | Frame extraction built-in |
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| GIF creation | FFmpeg/ImageMagick | FFmpeg for video, ImageMagick for images |
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## Installation
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```bash
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# macOS
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brew install ffmpeg imagemagick
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npm install -g rmbg-cli
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# Ubuntu/Debian
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sudo apt-get install ffmpeg imagemagick
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npm install -g rmbg-cli
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# Verify
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ffmpeg -version && magick -version && rmbg --version
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```
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## Essential Commands
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```bash
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# Video: Convert/re-encode
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ffmpeg -i input.mkv -c copy output.mp4
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ffmpeg -i input.avi -c:v libx264 -crf 22 -c:a aac output.mp4
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# Video: Extract audio
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ffmpeg -i video.mp4 -vn -c:a copy audio.m4a
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# Image: Convert/resize
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magick input.png output.jpg
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magick input.jpg -resize 800x600 output.jpg
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# Image: Batch resize
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mogrify -resize 800x -quality 85 *.jpg
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# Background removal
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rmbg input.jpg # Basic (modnet)
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rmbg input.jpg -m briaai -o output.png # High quality
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rmbg input.jpg -m u2netp -o output.png # Fast
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```
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## Key Parameters
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**FFmpeg:**
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- `-c:v libx264` - H.264 codec
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- `-crf 22` - Quality (0-51, lower=better)
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- `-preset slow` - Speed/compression balance
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- `-c:a aac` - Audio codec
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**ImageMagick:**
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- `800x600` - Fit within (maintains aspect)
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- `800x600^` - Fill (may crop)
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- `-quality 85` - JPEG quality
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- `-strip` - Remove metadata
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**RMBG:**
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- `-m briaai` - High quality model
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- `-m u2netp` - Fast model
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- `-r 4096` - Max resolution
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## References
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Detailed guides in `references/`:
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- `ffmpeg-encoding.md` - Codecs, quality, hardware acceleration
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- `ffmpeg-streaming.md` - HLS/DASH, live streaming
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- `ffmpeg-filters.md` - Filters, complex filtergraphs
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- `imagemagick-editing.md` - Effects, transformations
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- `imagemagick-batch.md` - Batch processing, parallel ops
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- `rmbg-background-removal.md` - AI models, CLI usage
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- `common-workflows.md` - Video optimization, responsive images, GIF creation
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- `troubleshooting.md` - Error fixes, performance tips
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- `format-compatibility.md` - Format support, codec recommendations
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