Hi kham131,
I don’t have 4.22 ready to test on right now, but I tested this with 4.25 in both PIE and standalone and it seems to be working as expected. I don’t believe this feature has changed much since it was checked in.
You don’t need to do anything special to record audio. You are correct that if you leave it blank, it uses the master submix, which is the final submix before rendering to the output.
Some questions:
- Does it work if you do it in PIE (vs standalone)?
- Are you doing this on PC?
- Are you using surround sound?
- Can you attach the recorded .wav file?
- Can you attach the log?