#7000: VP8 codec is not correctly detected but it is playable if vcodec is 
forced
----------------------------------+--------------------------------------
             Reporter:  sgarcia   |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:  mp4 vp8   |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+--------------------------------------
 Summary of the bug:

 I am creating an mp4 with vp8 and opus from an webrtc recording. The
 resulting video is playable with vlc nightly properly but fails to be
 played with ffplay

 The problem seems that the vp8 codec is not correctly detected for mp4
 format:

 {{{
 C:\usr\ffmpeg-20180201-b1af0e2-win64-static\bin>ffmpeg.exe -i
 c:\Users\Sergio\Downloads\x.mp4
 ffmpeg version N-89940-gb1af0e23a3 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 7.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
 --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-
 cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2
 --enable-avisynth
   libavutil      56.  7.100 / 56.  7.100
   libavcodec     58.  9.100 / 58.  9.100
   libavformat    58.  7.100 / 58.  7.100
   libavdevice    58.  0.101 / 58.  0.101
   libavfilter     7. 11.101 /  7. 11.101
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 000002950091b540] Unsupported VP Codec
 Configuration box version 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 000002950091b540] Could not find codec
 parameters for stream 0 (Video: none (vp08 / 0x38307076), none, 640x480,
 1016 kb/s): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'c:\Users\Sergio\Downloads\x.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: mp42isom
     creation_time   : 2018-02-01T07:52:58.000000Z
   Duration: 00:00:46.27, start: 0.000000, bitrate: 1089 kb/s
     Stream #0:0(und): Video: none (vp08 / 0x38307076), none, 640x480, 1016
 kb/s, 14.27 fps, 90k tbr, 90k tbn, 90k tbc (default)
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
       encoder         : VPC Coding
     Stream #0:1(und): Data: none (rtp  / 0x20707472), 41 kb/s
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
     Stream #0:2(und): Audio: opus (Opus / 0x7375704F), 48000 Hz, stereo,
 fltp, 31 kb/s (default)
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
     Stream #0:3(und): Data: none (rtp  / 0x20707472), 12 kb/s
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
 }}}


 But it does work if you manually override it:
 {{{
 C:\usr\ffmpeg-20180201-b1af0e2-win64-static\bin>ffplay.exe
 c:\Users\Sergio\Downloads\x.mp4 -vcodec vp8
 ffplay version N-89940-gb1af0e23a3 Copyright (c) 2003-2018 the FFmpeg
 developers
   built with gcc 7.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
 --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-
 cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2
 --enable-avisynth
   libavutil      56.  7.100 / 56.  7.100
   libavcodec     58.  9.100 / 58.  9.100
   libavformat    58.  7.100 / 58.  7.100
   libavdevice    58.  0.101 / 58.  0.101
   libavfilter     7. 11.101 /  7. 11.101
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 00000245a237cd40] Unsupported VP Codec
 Configuration box version 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 00000245a237cd40] Could not find codec
 parameters for stream 0 (Video: none (vp08 / 0x38307076), none, 640x480,
 1016 kb/s): unknown codec
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'c:\Users\Sergio\Downloads\x.mp4':
   Metadata:
     major_brand     : mp42
     minor_version   : 0
     compatible_brands: mp42isom
     creation_time   : 2018-02-01T07:52:58.000000Z
   Duration: 00:00:46.27, start: 0.000000, bitrate: 1089 kb/s
     Stream #0:0(und): Video: none (vp08 / 0x38307076), none, 640x480, 1016
 kb/s, 14.27 fps, 90k tbr, 90k tbn, 90k tbc (default)
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
       encoder         : VPC Coding
     Stream #0:1(und): Data: none (rtp  / 0x20707472), 41 kb/s
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
     Stream #0:2(und): Audio: opus (Opus / 0x7375704F), 48000 Hz, stereo,
 fltp, 31 kb/s (default)
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
     Stream #0:3(und): Data: none (rtp  / 0x20707472), 12 kb/s
     Metadata:
       creation_time   : 2018-02-01T07:52:59.000000Z
 Switch subtitle stream from #-1 to #-1 vq=  197KB sq=    0B f=0/0
    1.96 A-V: -0.041 fd=   0 aq=   24KB vq=  219KB sq=    0B f=0/0
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7000>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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