[FFmpeg-trac] #5037(undetermined:new): WEBM VP8 & VP9 - 2-pass encoding does not work

[FFmpeg]

#5037: WEBM VP8 & VP9 - 2-pass encoding does not work
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             Reporter:  solidghost   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  libvpx       |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Please either test with the command lines I provided or upload your input
 sample so I can try to reproduce.

 Completely unrelated: Please note that if you encode with x264 using
 {{{-an}}} for the first pass, the resulting encode can be horribly broken
 depending on the used container and input sample.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5037#comment:8>
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