media-files-conversion-ffmpeg
FFmpeg Skill
Natural language FFmpeg operations with opinionated best practices for speed, reliability, and quality.
Core Principles
- Stream copy by default - When converting video containers, use
-c copyto avoid re-encoding (10x faster, no quality loss) - CPU-only encoding - No GPU encoders (more reliable, hardware-agnostic)
- Fast presets - Default to
fastpreset for x264/x265 (good balance of speed/quality) - Context-aware audio - Ask about transcription when converting to MP3 (Whisper prefers 16kHz mono)
Common Operations
Audio Extraction
When extracting audio from video:
# Standard audio extraction (AAC/MP3)
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