ffmpeg-clilisted

# FFmpeg CLI Reference ## Contents - [Dependencies](#dependencies) - [Glossary of flags and filters](#glossary-of-flags-and-filters) - [Converting formats](#converting-formats) - [Resizing and padding](#resizing-and-padding) - [Trim by time](#trim-by-time) - [Verification and inspection](#verification-and-inspection) - [Reference files](#reference-files) ## Dependencies Verify ffmpeg is installed: ```sh ffmpeg -version ``` Install if missing: ```sh # macOS brew install ffmpeg # Ubuntu/Debian sudo apt install ffmpeg # Windows (scoop) scoop install ffmpeg ``` ## Glossary of flags and filters [Filtering reference](https://ffmpeg.org/ffmpeg-filters.html#Filtering-Introduction) | Flag/Filter | Purpose | |---|---| | `-vf` (also `-filter:v`) | Video filter | | `-af` (also `-filter:a`) | Audio filter | | `-filter_complex` | Complex filter graph for multi-stream filtering | | `[0]` | All streams from first input (0-based) | | `[0:v]` | Video stream from first input | | `[1:a]` | Audio stream from second input | | `0:v:0` | First input, first video stream | | `0:a:1` | First input, second audio stream | | `[name]` | Named stream, used with `-filter_complex` | | `-map [name]` | [Select stream for output](https://trac.ffmpeg.org/wiki/Map) | | `-y` | Auto-overwrite output files without confirmation | [Expression evaluations](https://ffmpeg.org/ffmpeg-all.html#Expression-Evaluation): `if`, `lte`, `gte` and more. ## Converting formats Remux MP4 to MKV (no re-encoding): ```sh