[FFmpeg-user] FFmpeg produces m4a files that won't play on 2nd generaton iPod Shuffle Model A1204.
baptiste.coudurier at gmail.com
Tue Mar 29 03:02:39 CEST 2011
On 03/28/2011 10:47 AM, bat guano wrote:
>> Did you try using qt-faststart on the files created ? Does it work ?
> Thanks for your reply Baptiste.
> I've just applied qt-faststart to the file that won't play, as you suggested.
> This was the result:-
> @ubuntu:~$ qt-faststart test1.m4a outfile.m4a
> ftyp 0 24
> free 24 8
> mdat 32 629935
> moov 629967 27781
> patching stco atom...
> writing ftyp atom...
> writing moov atom...
> copying rest of file...
> So qt-faststart has done some work... but the modified file still won't play in the Shuffle.
> The modified file is here:- http://www.mediafire.com/?l9q7sai9v7rf8ki
> Also, if I convert files using faac instead of libfaac the files will play OK without any modification.
> Like this:-
> faac -o output.m4a foo.wav
> And like this:-
> ffmpeg -i foo.flac -f wav - | faac -o output.m4a -
> Both those two methods are OK.
> It's just when I use libfaac that gives the problem result.
Ok, thanks a lot for your help.
Do you think you come to IRC ? irc.freenode.net #ffmpeg
It would be easier to try to debug it there.
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