[MPlayer-dev-eng] [PATCH] libass: fix parsing of tracks extracted from containers

Michael Niedermayer michaelni at gmx.at
Wed Sep 10 16:02:27 CEST 2008


On Wed, Sep 10, 2008 at 03:26:55PM +0300, Ivan Kalvachev wrote:
> On 9/10/08, Michael Niedermayer <michaelni at gmx.at> wrote:
> > On Sun, Sep 07, 2008 at 06:23:11PM +0300, Uoti Urpala wrote:
[...]
> >> think your proposal to move all timing information to the codec level to
> >> avoid the container limitations is problematic. It is the opposite of
> >> what is done with audio and video. Audio has an implicit duration based
> >
> > mpeg2 video does have a duration field in its bitstream, quite well known
> > for things like telecine.
> 
> Soft telecine is implemented by the combined use of repeat_first_field
> and top_field_first in progressive picture. It only increase the
> duration(1/fps) by 50%.
> There is no way to specify duration.

first, what you say is not correct (read the spec).
second a duration field limted to 1 and 1.5 is still a duration field.

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The educated differ from the uneducated as much as the living from the
dead. -- Aristotle 
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