[FFmpeg-trac] #4583(avcodec:open): Decoding artifacts with ffvp9

[FFmpeg]

#4583: Decoding artifacts with ffvp9
------------------------------------+-----------------------------------
             Reporter:  kagami      |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  vp9         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:  vp9,libvpx,ffvp9 => vp9
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 For future tickets: Please always test ffmpeg (the application) and please
 provide a command line that allows to reproduce the issue together with
 the complete, uncut console output.
 {{{
 $ ffmpeg -i ffvp9_corruption.webm -qscale 2 out.avi
 ffmpeg version N-72446-gdebf4d6 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54. 26.100 / 54. 26.100
   libavcodec     56. 41.100 / 56. 41.100
   libavformat    56. 34.100 / 56. 34.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 16.101 /  5. 16.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, matroska,webm, from 'ffvp9_corruption.webm':
   Metadata:
     title           : A Salty Stick-h9tJ57Qao_Y
     encoder         : Lavf56.33.101
   Duration: 00:00:08.01, start: 0.006000, bitrate: 216 kb/s
     Stream #0:0: Video: vp9 (Profile 0), yuv420p(tv), 640x360, SAR 1:1 DAR
 16:9, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
     Stream #0:1: Audio: opus, 48000 Hz, stereo, fltp (default)
 Please use -q:a or -q:v, -qscale is ambiguous
 Output #0, avi, to 'out.avi':
   Metadata:
     INAM            : A Salty Stick-h9tJ57Qao_Y
     ISFT            : Lavf56.34.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 640x360 [SAR
 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
     Metadata:
       encoder         : Lavc56.41.100 mpeg4
     Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp,
 192 kb/s (default)
     Metadata:
       encoder         : Lavc56.41.100 ac3
 Stream mapping:
   Stream #0:0 -> #0:0 (vp9 (native) -> mpeg4 (native))
   Stream #0:1 -> #0:1 (opus (native) -> ac3 (native))
 Press [q] to stop, [?] for help
 frame=  215 fps=0.0 q=2.0 Lsize=    1794kB time=00:00:08.00
 bitrate=1835.3kbits/s
 video:1585kB audio:188kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 1.205822%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4583#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker