[Ffmpeg-cvslog] Re: r5468 - trunk/libavformat/mov.c

Luca Barbato lu_zero
Wed Jun 28 21:23:12 CEST 2006

Baptiste Coudurier wrote:
> Hi
> Michael Niedermayer wrote:
>> [...]
>> well, for the AVSEEK_FLAG_BACKWARD case id say that if the user wants
>> timestamp t then we at least should seek so that the user will receive
>> a keyframe in every stream before or at t ...
>> for a forward seek on stream s id say that we should at least ensure that
>> the user gets a keyframe on every stream prior to the keyframe in s we
>> select
>> these are just the rules which seems to make most sense when thinking
>> about forward and backward seeking in a normal player, i doubt many demuxers
>> in ffmpeg actually conform to them ... and maybe iam missing something
>> and the rules actually arent ideal ...
>> also note that when we designed nut, rich and others suggested that seeking
>> should actually be based on a user specified set of streams instead of
>> streamless (stream_id == -1) or based on a single stream so that in case of
>> very few keyframes on one stream we wouldnt have "problems" with the
>> remaining streams
> I understand, and I experienced that. That version of mov_read_seek,
> seeks in other streams according to sample found timestamp. Is that
> version is preferred ?

Works quite better than the current code, please commit.


PS: we should either fix mplayer mov demuxer or start using ffmpeg one...


Luca Barbato

Gentoo/linux Gentoo/PPC

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