[FFmpeg-trac] #5276(undetermined:closed): Encoding with libvpx-vp9 produces corrupt results

FFmpeg trac at avcodec.org
Sun Feb 28 17:33:52 CET 2016

#5276: Encoding with libvpx-vp9 produces corrupt results
             Reporter:  Compizfox    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  libvpx       |               Resolution:  invalid
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by Compizfox):

 Replying to [comment:6 jamrial]:
 > Replying to [comment:5 Compizfox]:
 > > I tried with the option {{{-pix_fmt yuv422p}}} added (because my input
 file is also in that colour space) but that doesn't solve the problem.
 > Firefox, at least the current stable version, only supports yuv420p vp9
 video. No idea about Chrome or VLC, but it's probably the same problem:
 VP9 Profiles 1 and above (yuv422p, yuv440p, yuv444p, 10 and 12 bit video)
 are relatively new and its use not widespread. Only the latest versions of
 libavcodec and libvpx can decode and encode them.
 > Use yuv420p to encode webm files that can be played with current
 browsers, or switch to a different video player that uses a more recent
 libavcodec or libvpx build.

 Thanks, that was indeed the issue! I didn't know this, nor was this
 mentioned in http://wiki.webmproject.org/ffmpeg/vp9-encoding-guide or

 Thanks all for your help.

Ticket URL: <https://trac.ffmpeg.org/ticket/5276#comment:7>
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