[FFmpeg-cvslog] Write the fiel atom to mov files independently of the used video coded.

Michael Niedermayer michaelni at gmx.at
Fri Feb 15 23:06:45 CET 2013


On Fri, Feb 15, 2013 at 02:18:30PM +0000, Carl Eugen Hoyos wrote:
> Michael Niedermayer <michaelni <at> gmx.at> writes:
> 
> > > The QuickTime specification does not contain any hint that the atom
> > > must not be written in some cases and both the QuickTime and the
> > > AVID decoders do not fail if the atom is present.
> > 
> > what effect does this have on other players? hardware players for mp4?
> 
> It was tested with AVID decoders and I don't understand 
> how any player can fail if an additional allowed atom 
> is found.

how do you know its allowed in ipod files for example ?
we wouldnt have ipod & psp specific code if these devices at that time
did play standard mp4 files ...

why would a player fail ? because
1. the developers of it where lazy and only where payed to support
   their own matching encoder & muxer
2. because a company likes lock in schemes and dont want to support
   any file that has been generated by some competing encoder or muxer


> 
> > I dont mind so much if this is pushed to master because testing with
> > every player is unpractical, but not the release branches a few
> > minutes later. It first should be in master for a while and receive
> > testing without bugs turning up before its backported
> 
> Do you want me to revert?

I certainly would have preferred if this commit had spend a week or 2
in master without bugs before being backported


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Those who are best at talking, realize last or never when they are wrong.
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