====== ffmpeg - Decoding - Extract a specific stream ======

===== Check what streams exist =====

<code bash>
ffmpeg -i inputfile
</code>

returns:

<code>
Stream #0:0: Video: hevc .....
Stream #0:1(eng): Audio: aac ....
Stream #0:2(eng): Subtitle: ...
Stream #0:3(fre): Audio: aac ....
Stream #0:4(fre): Subtitle: aac ....
</code>

----

==== Extract a specific stream ====

<code bash>
ffmpeg -i inputfile.mkv -map 0:3 french-audio.mp3
</code>

<WRAP info>
**NOTE:**  This extracts the 3rd stream.

  * Which, from the sample streams, would be the French audio.
</WRAP>