I have a folder of video files listing:
1H.mp4; 1L.mp4; 2H.mp4; 2L.mp4; ....
The sounds are unbalanced for two ears - it is probably due to the recording is stereo. How can I change the audio tracks from stereo to mono for all the video files?
I assume the workflow would be extract (copy) the audio tracks out, change to mono, then insert (copy) back. I have found codes for individual files, but with hundreds of such short mp4 files, I'd like to know if I can use a 'loop' to deal with them all.