[Ffmpeg-devel] Re: mp3onmp4

bond b-o-n-d
Mon Nov 21 14:56:53 CET 2005

> bond wrote:
> >>True. .mp4 is a .mov with a few extensions that are "open" as long as
> >>you pay enough money to the right people.
> >
> >
> > thats not true, as the .mp4 container is license free
> Please point me to some official specs online. I have always wanted to
> know the exact layout.

there are some special specs for howto place mpeg-4 part2 video/aac in mp4
in part14
and some special specs for howto place avc video in mp4 in part15:

> > yes, they are opensource. i dont know any good .mp4 muxing tool from
> > (this includes qt7, which even cant mux multichannel aac into .mp4)
> Not the free version of QT7. They must have some tools that can do it
> since they have a bunch of HD movie trailers with 5.1 AAC audio.

hm i only saw hd trailers in .mov, not .mp4

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