Different Audio To Different Tracks When Recording - But Then What?

[saltyd]

Appreciate help with me understanding what to do with this.

I understand the concept of assigning different audio sources to different tracks when recording. What I don't understand is, what then?

If I record 5 different mic sources to 5 different tracks... what are you using to pull each audio track out from the exported video?

I tried with some program (forget what now) - but it seemed to take forever to rip each individual track from the video source.

So if I wanted to pull 5 different audio tracks from a video, mix them all together the way I want, then re-assemble the video with the mixed audio I made... are there tools I'm not thinking of to make this process doable without taking 2X the recorded video time to get a final product?

 

[koala]

So if I wanted to pull 5 different audio tracks from a video, mix them all together the way I want, then re-assemble the video with the mixed audio I made... are there tools I'm not thinking of to make this process doable without taking 2X the recorded video time to get a final product?

Many audio processing tools are able to directly read all the audio tracks if you open the video just like an audio file. Audacity is able to do that. No intermediate audio file necessary, it's directly accessing the video file.
For extracting audio tracks from a video file to separate audio files, consult one of the many results from https://www.google.com/search?q=extract+audio+from+video

I use the ffmpeg command line tool for this, for example like this:
ffmpeg -i "2024-05-20 00-53-16.mkv" -map 0:a:0 -c copy track1.m4a -map 0:a:1 -c copy track2.m4a -map 0:a:2 -c copy track3.m4a -map 0:a:3 -c copy track4.m4a -map 0:a:4 -c copy track5.m4a -map 0:a:5 track6.wav

This will extract audio tracks 1-5 and copy the aac encoded audio stream verbatim to corresponding audio files, and also export track 6 and write its audio uncompressed as wav.

 

[saltyd]

Boom exactly what I was looking for. Thank you so much!