user2243: I have OBS Studio configured to combine different audio inputs into several audio tracks/channels using its built-in mixer. But when OBS saves a local copy of the stream, the video file only has one audio track, not the several I configured. I'm exporting the video to MKV file, as I thought it would be the most versatile format and had support for multiple audio/video tracks.
Is this a configuration issue or is there something else to keep in mind? Perhaps a different export file format would be better? I'd still like to retain all (multiple) audio tracks within the single exported file.

user19234: In OBS Studio go to Settigns->Output->Recording and under Recording Format you have Audio Track. You have to enable audio tracks that you set up in audio mixer. You can also name them in Audio tab.

2243: <p>I have OBS Studio configured to combine different audio inputs into several audio tracks/channels using its built-in mixer. But when OBS saves a local copy of the stream, the video file only has one audio track, not the several I configured. I'm exporting the video to MKV file, as I thought it would be the most versatile format and had support for multiple audio/video tracks.</p>

<p>Is this a configuration issue or is there something else to keep in mind? Perhaps a different export file format would be better? I'd still like to retain all (multiple) audio tracks within the single exported file.</p>
 19234: <p>In OBS Studio go to Settigns->Output->Recording and under Recording Format you have Audio Track. You have to enable audio tracks that you set up in audio mixer. You can also name them in Audio tab.</p>
