[FFmpeg-devel] [PATCH] ffmpeg: Set duration on encoded subtitle packets.
ubitux at gmail.com
Wed Jun 6 18:54:43 CEST 2012
On Wed, Jun 06, 2012 at 09:30:07AM -0700, Philip Langdale wrote:
> On Sun, 3 Jun 2012 14:20:07 -0700
> Philip Langdale <philipl at overt.org> wrote:
> > On Sun, 3 Jun 2012 21:08:40 +0200
> > Clément Bœsch <ubitux at gmail.com> wrote:
> > >
> > > MicroDVD demuxer is making use of that duration field; are you sure
> > > it doesn't break anything to override it?
> > >
> > > (Common scenario: ffmpeg -i microdvd.sub out.ass, see 2d52ee8a for
> > > more information)
> > Your example is on the decoder side. I'm talking about the encoder.
> > Today, 'ffmpeg' will always pass subtitle packets to the muxer with
> > no duration - and we have got away with this because the muxers don't
> > require packet duration for the formats we supporClémentt (eg: the
> > muxer parses srt and ass packets to get the duration). For timed text,
> > there's no side-band way to pass duration, so we have to do it
> > properly on the packet.
> Clément let me know that he's happy with this change off-list.
Mail fail again, sorry.
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