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Repairing broken QuickTime audio recordings

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Published on Jan 31, 2016

I have a bad habit of sleeping my laptop before clicking 'stop' on a QuickTime Player audio recording, which usually means I lose the entire recording. I also have a bad habit of not using software that isn't subject to that limitation (different story).

This video demonstrates a process for analyzing and recovering partial recordings by correcting bad file metadata. We'll briefly look at the spec for the file format in question (AIFC), and then bust out a hex editor to do what we need to do.

Also included is a demo of a script I wrote to automate the process of fixing broken QuickTime audio recordings. The script is published to github here: https://gist.github.com/dreness/e61fb...

Finally, there is a short demo of an app called Synalyze It! Pro which I used heavily while figuring this out. The Synalize It! Pro grammar I made is also published on the same gist page: https://gist.github.com/dreness/e61fb...

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