[FFmpeg-user] Default audio stream -- how do I set it?

[Ferdi Scholten]

On 10-09-2023 03:52, Mark Filipak wrote:
> I originally had a video with
> 0:0 = video
> 0:1 = commentary
> 0:2 = dialog
> 0:3 =subtitles
>
> Of course, the commentary was the default audio.
> I wanted to switch 0:1 & 0:2
>
> ffmpeg -i SOURCE -map 0:0 -map 0:2 -map 0:1 -map 0:3 -codec copy TARGET
>
> That succeeded...
> 0:0 = video
> 0:1 = dialog
> 0:2 = commentary
> 0:3 =subtitles
>
> ...except for 1 thing: The default audio is still the commentary (now
> 0:2). For several hours I searched and tried various methods to make
> the new 0:1 the default, and failed.
>
> How can I do it? ...Thanks!
>
There is not enough information here to give an correct answer. Need to 
know the type of container and we are missing the output of the ffmpeg 
command you used.