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is there any way to losslessly convert a whole recursive file directory of .m4a files to .opus (lemmy.ml)

submitted 8 months ago by [email protected] to c/[email protected]

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i have a bunch of .m4a files in one folder, 1000s. can i automate their conversion somehow?

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[–] [email protected] 2 points 8 months ago (1 children)

It'll also error out or prompt to overwrite an existing file unless a flag is passed that tells it to overwrite unattended.

[–] [email protected] 1 points 8 months ago (1 children)

Sure, but if it errors out no harm no foul, and don't pass any flags to overwrite the input file which I had not included above.

While I'm thinking about it, what is that flag? Because afaik ffmpeg can't overwrite and convert the file simultaneously, you have to use a temp file.

[–] [email protected] 1 points 8 months ago

That's the point: you have to go out of your way to accidentally overwrite your input files with ffmpeg.

And no it indeed can't output to the same file as input.