[FFmpeg-trac] #2691(avformat:open): ffmpeg detects 0 channels in audio streams and does not suggest increasing values for analyzeduration and probesize

[FFmpeg]

#2691: ffmpeg detects 0 channels in audio streams and does not suggest increasing
values for analyzeduration and probesize
-------------------------------------+-------------------------------------
             Reporter:  vhann        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mpegps       |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:  mpegps => mpegps regression
 * priority:  minor => important


Comment:

 This is now a regression: Current git head does not inform the user that
 max_analyze_duration was reached and that increasing it could help.
 {{{
 $ ffmpeg -i sampleForTicket2691.vob
 ffmpeg version N-54207-ge59fb3f Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jun 26 2013 08:55:21 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 37.101 / 52. 37.101
   libavcodec     55. 17.100 / 55. 17.100
   libavformat    55. 10.100 / 55. 10.100
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 77.101 /  3. 77.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mpeg, from 'sampleForTicket2691.vob':
   Duration: 00:00:24.46, start: 0.140600, bitrate: 17150 kb/s
     Stream #0:0[0x1bf]: Data: dvd_nav_packet
     Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [SAR
 32:27 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0:2[0x82]: Audio: ac3, 0 channels
     Stream #0:3[0x81]: Audio: ac3, 0 channels
     Stream #0:4[0x80]: Audio: ac3, 0 channels
 At least one output file must be specified
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2691#comment:3>
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