[FFmpeg-trac] #4550(undetermined:new): Overlaying VOBSUB from MKV sample while deinterlacing produces various timing oddities

FFmpeg trac at avcodec.org
Tue May 12 12:56:07 CEST 2015


#4550: Overlaying VOBSUB from MKV sample while deinterlacing produces various
timing oddities
-------------------------------------+-------------------------------------
             Reporter:  11rcombs     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by 11rcombs):

 Looks like vf_yadif.c changes the time base (in config_props), and
 vf_overlay.c uses the time base it gets in config_output, which doesn't
 get updated. Not sure if this is overlay's fault for using the wrong
 thing, yadif's fault for changing the wrong thing (or changing at the
 wrong time), or lavfi's fault for not passing something around correctly.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4550#comment:3>
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