I have recorded with my Dive Gem (one of the few hardware AAC recorders available today on the market) an AAC file using the internal microphone. Unfortunealy something went wrong with the battery connection, so that the file is unplayable. I presume that the header is damaged or missing because no info are displayed in Winamp.
Is it possible repair it using some piece of software like an hex editor?
The file is not wrapped in an mp4 container, it is adts format.

Regards
Enrico

ADTS has headers at regular intervals so it should be recoverable, try to cut just before an FFFF FF sequence.

Thank you for your help, I'll try that.
I'll let you know.

Ok, I have played the file using a file rescue program. It works now, no need for hex editor.

Thank you anyway

For future reference, a short explanation of how you fixed the file would be helpful. Ie. what software did you use?

I have used SoftLogica Handy Recovery 2.0. I have tried to play the file directly from the SD card in which it was recorded, but this hasn't worked, first, then I have tried to copy the file on the harddisk, but the process aborted. Recovering the file using Handy Recovery was the solution.