[MPlayer-dev-eng] [BUG?] Possiblity to display subtitle at once after a seek for soft sub in mkv?

[Ulion]

2007/12/4, Aurelien Jacobs <aurel at gnuage.org>:
> Ulion wrote:
>
> > 2007/12/3, Aurelien Jacobs <aurel at gnuage.org>:
> > > Ulion wrote:
> > >
> > > > Hello,
> > > >
> > > > An user on irc has been annoyed for 5 years for this problem, soft
> > > > subs (in mkv, ogm) not get displayed immediately after a seek. He
> > > > said other player has no such problem, then this could be a
> > > > ignored feature. I guess those players may already load all subs
> > > > into memory, or seek to an earlier position to catch sub should
> > > > be displayed at the seek target point.
> > >
> > > I don't remember if Matroska has a way to know where does the sub
> > > that should be displayed currently, start (something like a sub
> > > index). If it don't, I doubt that parsing the whole file, or even
> > > seeking back to try to find a sub would be something acceptable.
> >
> > Any detail advice how to do that, such like how to change that code
> > seeking back about 10 seconds and demux only subtitle stream until the
> > seek target pts? I'm not familar with demuxers, so if with your
> > advice, I may do that?
>
> Why 10 seconds ? The sub might have started 1 hour ago...
> I don't think it's OK to add a hack that don't work in all the
> situations.
>
> > > > I don't known whether mplayer has any chance make this?
> > >
> > > Even if there is a proper way to do it, I'm not interested to do it
> > > for MPlayer demuxer. Doing it for lavf demuxer would be more useful
> > > in the long-run.
> >
> > I'd like to see lavf demuxer support that feature, will it be soon?
>
> As soon as you provide a patch that don't rely on seeking back to a
> random time nor on parsing the whole file before starting playback.
>
> A hint: I guess that most Matroska files have an index for
> subtitles "frames". See:
> http://www.matroska.org/technical/specs/index.html#CueingData

Great, the cue will help if there is cue for subtitle track.
But on my hand, anime seems only has cue for video track. :(

-- 
Ulion