[mythtv-users] DVB subtitles and delay

[Martin]

For all your information: This issue is now solved by Trunk 24242 as listed
in issue.

2010/4/20 Kenni Lund <kenni at kelu.dk>

> 2010/4/15 Jeppe Nejsum Madsen <jeppe at ingolfs.dk>:
> > On Thu, Apr 15, 2010 at 12:32 PM, Kenni Lund <kenni at kelu.dk> wrote:
> >> 2010/4/14 Mark Kendall <mark.kendall at gmail.com>:
> >>> On 13 April 2010 03:54, Martin <martin.rene.mortensen at gmail.com>
> wrote:
> >>>> MythTV has since the 0.22 ffmpeg sync not had great support for DVB
> >>>> subtitles. They are delayed - and this off course has very low WAF.
> >>>> Theres a bug report on it, fix is seemingly a somewhat large rewrite
> and has
> >>>> been postponed to 0.24 now.
> >>>> TRAC ticket 6753: http://svn.mythtv.org/trac/ticket/6753
> >> <SNIP>
> >>> The problem lies somewhere between the broadcaster and ffmpeg's
> >>> demuxing of the stream, with the net result that some subtitles arrive
> >>> very late. I worked with the patch that Janneg posted to the ticket
> >>> for queueing transmitted packets and that did generate some
> >>> improvements but it certainly did not fix it and was far from a
> >>> complete/commitable solution. There are various issues - though
> >>> ideally this would be fixed within ffmpeg itself. Overall there is no
> >>> simple fix that I can see that sits within the main MythTV code.
> >>
> >> Mark, I just did a quick test with FFMPEG SVN r22837 and when playing
> >> the clip in ticket #6753 with ffplay, the subtitles are close to, if
> >> not perfectly, in sync :) So it seems like this have been fixed in
> >> upstream FFMPEG...
> >
> > That is good to know :-) Could be interesting to try this with the
> > ffmpeg rev used in myth, just to verify that it is indeed an ffmpeg
> > issue...
>
> Unfortunately, it's not a FFMPEG bug after all, it's a MythTV bug:
> http://mythtv.org/pipermail/mythtv-dev/2010-April/068221.html
>
> Best Regards
> Kenni
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-- 
"There is no Planet B."
Mvh. / Brgds.
Martin René Mortensen
mailto: martin.rene.mortensen at gmail.com
http://www.morten5en.dk
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