Tips & Notes

*Automatic Stream Selection

If there are NO map options for a particular output file, FFmpeg will automatically select a stream based upon the following criteria:
Video
The highest resolution
Audio
The most channels
Subtitles
The first subtitle stream
Data & Attachments
Not automatically selected

*Stream Specifier Types

:v
Matches all video streams
:V
Only matches video streams which are not attached pictures, video thumbnails or cover arts
:a
For audio
:s
For subtitles
:d
For data
:t
For attachments