Probing regression with h264 in mkv

[Carl Eugen Hoyos]

​http://thread.gmane.org/gmane.comp.video.ffmpeg.user/57983
A user uploaded a mkv file containing 10bit h264 video that is not successfully probed without increased -analyzeduration since a57ece0c

$ ffmpeg -i h264_pixfmt_matroska.mkv
ffmpeg version N-73667-g99b0cad Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.7 (SUSE Linux)
  configuration: --enable-gpl
  libavutil      54. 28.100 / 54. 28.100
  libavcodec     56. 48.100 / 56. 48.100
  libavformat    56. 40.100 / 56. 40.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 21.100 /  5. 21.100
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
[matroska,webm @ 0x1c2c3e0] Could not find codec parameters for stream 0 (Video: h264, none, 1920x1080): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, matroska,webm, from 'h264_pixfmt_matroska.mkv':
  Metadata:
    title           : Fate/Zero BD - Creditless ED1: Aoi Eir / Memoria
    encoder         : libebml v1.2.2 + libmatroska v1.3.0
    creation_time   : 2012-04-05 12:28:42
  Duration: 00:01:30.05, start: 0.000000, bitrate: 1819 kb/s
    Stream #0:0(jpn): Video: h264, none, 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 2k tbc (default)
    Metadata:
      title           : H.264 1080p BD
    Stream #0:1(jpn): Audio: flac, 48000 Hz, stereo, s32 (24 bit) (default)
    Metadata:
      title           : FLAC 2.0 24-bit
    Stream #0:2(eng): Subtitle: ass (default)
    Metadata:
      title           : Styled Subtitles
    Stream #0:3: Attachment: ttf
    Metadata:
      filename        : FOT-MatisseMinoriPro-B-En.ttf
      mimetype        : application/x-truetype-font
At least one output file must be specified

[Carl Eugen Hoyos]

​http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket4725/

[Michael Niedermayer]

Fixed in 4afc3429be49345d9e279adb4b4aeea9b13db47c