[FFmpeg-trac] #8620(avdevice:open): Fundamental bug in DirectShow capture - wrong timestamps

[FFmpeg]

#8620: Fundamental bug in DirectShow capture - wrong timestamps
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             Reporter:  Dmitry       |                    Owner:  (none)
  Sinitsyn                           |
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avdevice
              Version:  unspecified  |               Resolution:
             Keywords:  dshow dts    |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Diederick Niehorster):

 Replying to [comment:15 Dmitry Sinitsyn]:
 > I submitted my patch [http://ffmpeg.org/pipermail/ffmpeg-
 devel/2020-June/263999.html] a year ago without any reaction. Hope your
 will have it.

 Ah, there ya go. Thats pretty much the same patch except that you have
 default on and i have default off :)

 > normal way should be:
 IMediaSample::GetTime for all samples, if time==NULL, then use reference
 clock.

 Ah, so is there a case missin? something like:
 {{{
 IMediaSample_GetTime(sample, &curtime, &dummy);
 if (curtime == 0)
     curtime = graphtime;
 }}}
 where graphtime is set by IReferenceClock_GetTime(clock, &graphtime);
 ?
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8620#comment:16>
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