[FFmpeg-user] Problem concatenating .mp4 files - dimensions notset

David Favor david at davidfavor.com
Tue Sep 6 17:58:45 CEST 2011

Etienne Buira wrote:
> On Tue, Sep 06, 2011 at 09:22:22AM -0500, David Favor wrote:
>> Trying to concatenate a set of .mp4 files together
>> with no intermediate disk space and having no luck.
> Hi.
> This should not be very hard to do with MP4Box.

Unfortunately MP4Box audio drifts out of sync for
every added file. Concatenate 5-6 files and the
final file is way out of sync.

> AFAIK, ffmpeg can only concatenate streams when fed using a concatenable
> format (mpegts for instance).
> Regards.


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