i have a bunch of .m4a files in one folder, 1000s. can i automate their conversion somehow?
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GNU Parallel works well for this kind of thing. A lot of audio stuff is single threaded, so unlike video transcoding running multiple conversions simultaneously is a useful thing to do. The command is simpler, too:
parallel ffmpeg -i {} {.}.opus ::: *.m4a
Thanks, learning is always good, changed it