I have an unusual problem that I hope someone can help me solve. I have 45 video files that I'm batch encoding as MP4. Some of those files have their audio channel position set to Front L R and others have have it set to Front C. However, the distribution system which these videos are sent to (and which I have no control over) does some re-processing of these videos. All the videos that have their Channel Position set to Front C are coming back with distorted audio.
My question is:
Does anyone know how to encode a video with ffmpeg and force the audio channel positions to be Front L R? (I have carefully studied this page (https://trac.ffmpeg.org/wiki/AudioChannelManipulation#monostereo) but it was not obvious what the solution might be)