How to change audio channel assignments in quicktime movie files - QT7 could do it, but not on a modern OS X?
This was easy to do in QT7 when looking at 'movie properties'.
I still need to do this, but need to be on a modern OS X.
How can one change audio channel assignment from 'mono' to 'left' for example?
This post from 2014 shows the QT7 movie properties audio assignment window in action:
https://discussions.apple.com/thread/5967906?answerId=25219940022#25219940022