media-transcoding

Original：🇺🇸 English
Translated

FFmpeg-based media transcoding workflows with preset-driven conversions, batch processing, and safe backups for web/mobile/archive outputs.

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Sourcebobmatnyc/claude-mpm-skills
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NPX Install

npx skill4agent add bobmatnyc/claude-mpm-skills media-transcoding

Tags

Translated version includes tags in frontmatter
ffmpeg-transcodingmedia-processingbatch-conversionpreset-workflowsvideo-encoding

SKILL.md Content

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Media Transcoding (FFmpeg)

Overview

Use FFmpeg presets to normalize video outputs for web streaming, mobile delivery, or archival quality. Your 
hf-videos
repo already includes a simple bash script and a more advanced Python script with presets, backups, and logging.

Quick Start (hf-videos)

bash
./ffmpeg_convert.sh check
./ffmpeg_convert.sh web_standard "My Video.mp4"
./ffmpeg_convert.sh batch_web_standard
Outputs are written to 
converted/
with backups in 
backup/
and logs in 
conversion.log
.

Preset Summary (hf-videos)

  • web_standard: 1080p max, CRF 23, 128k audio, 
    +faststart
  • web_high: 1080p max, CRF 20, 192k audio
  • mobile: 720p max, CRF 25, 96k audio
  • ultra_compact: 480p max, CRF 28, 64k audio
  • archive: original res, CRF 18, 256k audio
All presets use H.264 + AAC with 
+faststart
for streaming-friendly MP4s.

Batch Workflow

  1. Run a single-file conversion first to validate output.
  2. Run batch conversion once the preset is confirmed.
  3. Verify output sizes and playback.
Batch commands:
bash
./ffmpeg_convert.sh batch_web_standard
./ffmpeg_convert.sh batch_mobile
./ffmpeg_convert.sh batch_ultra_compact

Advanced Script (convert_video.py)

Use 
convert_video.py
when you need:
  • Progress monitoring
  • Metadata inspection
  • Overwrite control
  • Preset listing and batch automation
bash
python3 convert_video.py --list-presets
python3 convert_video.py --file "My Video.mp4" --preset web_standard
python3 convert_video.py --preset mobile --overwrite

Output Conventions

  • Converted files use suffixes like 
    _web_standard
    .
  • Backups preserve original filenames.
  • Logs go to 
    conversion.log
    for audit and troubleshooting.

Troubleshooting

  • FFmpeg missing: 
    brew install ffmpeg
    (macOS) or install from ffmpeg.org.
  • Permission errors: 
    chmod +x ffmpeg_convert.sh
    .
  • Disk pressure: clean 
    converted/
    and 
    backup/
    after validation.

Related Skills

  • toolchains/universal/infrastructure/docker