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ffmpeg_mkv_ops.md
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@ -5,10 +5,9 @@ Full documentation: https://ffmpeg.org/ffmpeg.html
```
ffmpeg -i input.mkv
```
track indexes are zero-based.
### Types
### Track types
```
v - video
a - audio
@ -19,12 +18,12 @@ m - metadata
```
---
### Pick tracks
syntax
#### syntax
```
ffmpeg -i input.mkv -map 0:type -map 0:type -c copy output.mkv
ffmpeg -i input.mkv -map 0:type:index -map 0:type:index -c copy output.mkv
```
#### examples:
#### examples
pick all video tracks, second audio track and third subtitle track:
```
ffmpeg -i input.mkv -map 0:v -map 0:a:1 -map 0:s:2 -c copy output.mkv
@ -35,18 +34,18 @@ ffmpeg -i "$i" -map 0:v:0 -map 0:a:0 -map 0:s:0 -map 0:t -c copy
```
---
### Omit tracks (negative mapping)
syntax
#### syntax
```
ffmpeg -i input.mkv -map 0 -map -0:type:index -c output.mkv
```
#### examples:
#### examples
keep all tracks except first audio and first subtitle tracks:
```
ffmpeg -i input.mkv -map 0 -map -0:a:0 -map -0:s:0 -c output.mkv
```
---
### Extract subtitle track
syntax
#### syntax
```
ffmpeg -i input.mkv -map 0:m:key:value -c:s copy|format output.srt
```