[FFmpeg-trac] #5468(undetermined:new): on2avc (0x0501): improve decoding of stereo modes

[FFmpeg]

#5468: on2avc (0x0501): improve decoding of stereo modes
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 https://samples.mplayerhq.hu/V-codecs/VP6/wagner-700.vp6

 https://samples.mplayerhq.hu/V-codecs/VP5/BeautifulMind_640vp5-750.vp5

 https://samples.mplayerhq.hu/V-codecs/VP6/Xmen-avc-500.vp6

 three more samples are here:

 https://www.datafilehost.com/d/05f10ede


 {{{
 C:\>ffmpeg -i wagner-700.vp6 out.wav
 ffmpeg version N-79546-g13406b6 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5.0-1.fc14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-pthreads --enable-memalign-hack --enable-runtime-
 cpudetect --
 enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -lw
 inmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snapsh
 ots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/sna
 pshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3 --
 enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-li
 bvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-li
 bopencore-amrwb --enable-libmp3lame --enable-libfreetype --enable-libvpx
 --disab
 le-decoder=libvpx
   libavutil      55. 22.100 / 55. 22.100
   libavcodec     57. 35.100 / 57. 35.100
   libavformat    57. 34.102 / 57. 34.102
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 44.100 /  6. 44.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 [on2avc @ 0x2c47d80] Stereo mode support is not good, patch is welcome
 Input #0, avi, from 'wagner-700.vp6':
   Duration: 00:02:49.23, start: 0.000000, bitrate: 816 kb/s
     Stream #0:0: Video: vp6 (VP62 / 0x32365056), yuv420p, 624x352, 700
 kb/s, 29.
 97 fps, 29.97 tbr, 29.97 tbn
     Stream #0:1: Audio: avc ([1][5][0][0] / 0x0501), 44100 Hz, stereo,
 fltp, 96
 kb/s
 [on2avc @ 0x2899020] Stereo mode support is not good, patch is welcome
 [wav @ 0x289c020] Using AVStream.codec to pass codec parameters to muxers
 is dep
 recated, use AVStream.codecpar instead.
 Output #0, wav, to 'out.wav':
   Metadata:
     ISFT            : Lavf57.34.102
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16
 , 1411 kb/s
     Metadata:
       encoder         : Lavc57.35.100 pcm_s16le
 Stream mapping:
   Stream #0:1 -> #0:0 (avc (on2avc) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 size=   29152kB time=00:02:49.22 bitrate=1411.2kbits/s speed= 285x
 video:0kB audio:29152kB subtitle:0kB other streams:0kB global headers:0kB
 muxing
  overhead: 0.000261%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5468>
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