[FFmpeg-trac] #6149(avformat:open): VP6 corruption

FFmpeg trac at avcodec.org
Wed Feb 15 01:01:19 EET 2017


#6149: VP6 corruption
-------------------------------------+-------------------------------------
             Reporter:  cgbug        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  flv          |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * component:  undetermined => avformat
 * priority:  normal => important
 * keywords:   => flv regression
 * reproduced:  0 => 1


Old description:

> Sample:
> https://www.datafilehost.com/d/d5c82fbb
>
> FFmpeg v2.8.6 works OK.
>

> ffmpeg version N-83507-g8fa18e0 Copyright (c) 2000-2017 the FFmpeg
> developers
>   built with gcc 5.4.0 (GCC)
>   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-
> cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc
> --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
> --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
> --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
> --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
> --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
> libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp
> --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora
> --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-
> libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-
> libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-
> libzimg --enable-lzma --enable-zlib
>   libavutil      55. 47.100 / 55. 47.100
>   libavcodec     57. 80.100 / 57. 80.100
>   libavformat    57. 66.102 / 57. 66.102
>   libavdevice    57.  2.100 / 57.  2.100
>   libavfilter     6. 73.100 /  6. 73.100
>   libswscale      4.  3.101 /  4.  3.101
>   libswresample   2.  4.100 /  2.  4.100
>   libpostproc    54.  2.100 / 54.  2.100
> [flv @ 0000000000407320] audio stream discovered after head already
> parsed
> [flv @ 0000000000407320] video stream discovered after head already
> parsed
> [flv @ 0000000000407320] Packet mismatch -265762973 15027 152220
> Input #0, flv, from 'vp6_error.flv':
>   Metadata:
>     audiodelay      : 0
>     canSeekToEnd    : true
>   Duration: 00:25:38.17, start: 0.000000, bitrate: 555 kb/s
>     Stream #0:0: Audio: mp3, 22050 Hz, stereo, s16p, 49 kb/s
>     Stream #0:1: Video: vp6f, yuv420p, 640x480, 460 kb/s, 24 fps, 1k tbr,
> 1k tbn

New description:

 Sample:
 https://www.datafilehost.com/d/d5c82fbb

 FFmpeg v2.8.6 works OK.
 {{{
 ffmpeg version N-83507-g8fa18e0 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 5.4.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-cuda --enable-
 cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
 --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
 --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy
 --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-
 libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
 libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma
 --enable-zlib
   libavutil      55. 47.100 / 55. 47.100
   libavcodec     57. 80.100 / 57. 80.100
   libavformat    57. 66.102 / 57. 66.102
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 73.100 /  6. 73.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 [flv @ 0000000000407320] audio stream discovered after head already parsed
 [flv @ 0000000000407320] video stream discovered after head already parsed
 [flv @ 0000000000407320] Packet mismatch -265762973 15027 152220
 Input #0, flv, from 'vp6_error.flv':
   Metadata:
     audiodelay      : 0
     canSeekToEnd    : true
   Duration: 00:25:38.17, start: 0.000000, bitrate: 555 kb/s
     Stream #0:0: Audio: mp3, 22050 Hz, stereo, s16p, 49 kb/s
     Stream #0:1: Video: vp6f, yuv420p, 640x480, 460 kb/s, 24 fps, 1k tbr,
 1k tbn
 }}}

--

Comment:

 Regression since cbbd906be6150be38dfc14b6bc67dcac8da8aea4, related to
 tickets #4867, #4903 and #5648.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6149#comment:2>
FFmpeg <https://ffmpeg.org>
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