FWIW I found another method at StackOverflow for determining the number of audio channels. It uses FFProbe, this is the call:
Quote:
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ffprobe -i yourFile.mp4 -show_entries stream=channels -select_streams a:0 -of compact=p=0:nk=1 -v 0
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It looks much clearer than the MediaInfo output for several 8-ch formats. No idea if it is as reliable as the AVSMeter method.
The StackOverflow page is here:
https://stackoverflow.com/questions/...ffmpeg-command