[MPlayer-users] Trouble with Mp3 audio in MP4 containers

WireSpot wirespot at gmail.com
Wed Dec 21 13:21:00 CET 2005


On 12/20/05, Moritz Bunkus <moritz at bunkus.org> wrote:
> On Tuesday 20 December 2005 20:41, The Wanderer wrote:
> > The "garbage in the audio track" may or may not be a result of the same
> > reason you have to specify -ac +ffmp3 - the audio stream is not labeled
> > with the usual MP3 identifier code.
>
> No, the reason is that mkvmerge's Quicktime/MP4 reader was heavily
> inspired by mplayer's Quicktime demuxer. Therefore both make the same
> mistakes / read the same wrong data from the file.

I wonder what code mp4creator uses. Theoretically I should've been
able to remux MP4 to MP4 using mp4creator exclusivelly. But as I said,
it extracted the video track from the MP4 and when I tried to merge it
in a new file it complained it's an unknown format. The very same
track it itself had extracted earlier. Go figure.




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