[FFmpeg-trac] #1171(undetermined:closed): h264 to VP8: "non monotonically increasing dts" with 2 pass and vp8flags altref

[FFmpeg]

#1171: h264 to VP8: "non monotonically increasing dts" with 2 pass and vp8flags
altref
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             Reporter:  temporary    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  webm libvpx  |               Resolution:  wontfix
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by reimar):

 First about matroska: it is possible altref is supported in that too, but
 if so it is a rather new feature and might break things on older players.
 Worse, at least so far it is not possible to enable that feature only for
 VP8, so that might lead to silently creating broken files.
 A better error message would be nice, but I do not know how to reliably
 detect that situation, the error message can be caused by altref but it
 can be an FFmpeg bug just as well.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1171#comment:6>
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