[FFmpeg-trac] #11126(ffmpeg:new): Filter "setpts=PTS-STARTPTS" in 2-pass VP9 may cause abnormal bitrate allocation

[FFmpeg]

#11126: Filter "setpts=PTS-STARTPTS" in 2-pass VP9 may cause abnormal bitrate
allocation
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             Reporter:  Saul Baker   |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  regression   |               Blocked By:
  2-pass                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Saul Baker):

 That's a rather reasonable doubt to have about any significantly complex
 filter graph!

 But as any setpts usage seems to cause this (PTS-STARTPTS, PTS+n, PTS-n)
 and setpts generally finds wide use, I think it's less relevant of a
 doubt.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11126#comment:15>
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