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I wanted to use ffmpeg

ffmpeg -i file.cda file.m4a

but I get the error

Invalid data found when processing input

So how can I convert lots of cda files on macOS?

  • If e.g. file.cda is a file you have on your HDD/SSD, then you can not convert as CDA files do not contain any audio data, they are just shortcuts to the tracks on an audio disc. – user3439894 Jun 8 '19 at 12:37
  • @user3439894 I realised this, annoying. Thanks. – theonlygusti Jun 8 '19 at 13:20
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I can't because a .CDA (CD Audio) file is a Windows file, created as a shortcut to a file located on a CD.

The file doesn't contain any Audio data.

I had to rip the CD on my Windows machine, then copy the ripped (located in the Music folder) files onto my Mac.

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