[FFmpeg-trac] #7309(avformat:open): FFmpeg failing to detect mp2 audio with stream identifier "AC-3" (was: FFmpeg failing to detect audio for a particular input stream)

FFmpeg trac at avcodec.org
Mon Jul 9 20:44:06 EEST 2018 

#7309: FFmpeg failing to detect mp2 audio with stream identifier "AC-3"
-------------------------------------+-------------------------------------
             Reporter:  barhom       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mpegts       |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  undetermined => avformat
 * priority:  normal => minor
 * version:  unspecified => git-master
 * keywords:   => mpegts regression


Comment:

 For future tickets: Please remember to always test current FFmpeg git
 head.

 Can be considered a regression since
 4bec36f98c5150b09d45740f3e1c80526e85b676 related to ticket #4864 but the
 sample looks invalid with mp2 audio using `AC-3` as stream identifier.
 {{{
 $ ffmpeg -i input_cut.ts
 ffmpeg version N-91445-g6cc6b61 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 4.3 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 21.104 / 58. 21.104
   libavformat    58. 17.101 / 58. 17.101
   libavdevice    58.  4.101 / 58.  4.101
   libavfilter     7. 25.100 /  7. 25.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] decode_slice_header error
 [h264 @ 0x9a9b780] no frame!
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] decode_slice_header error
 [h264 @ 0x9a9b780] no frame!
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 0 referenced
 [h264 @ 0x9a9b780] decode_slice_header error
 [h264 @ 0x9a9b780] no frame!
 [h264 @ 0x9a9b780] sps_id 0 out of range
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 1 referenced
 [h264 @ 0x9a9b780] sps_id 0 out of range
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 1 referenced
 [h264 @ 0x9a9b780] decode_slice_header error
 [h264 @ 0x9a9b780] no frame!
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 1 referenced
 [h264 @ 0x9a9b780] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b780] non-existing PPS 1 referenced
 [h264 @ 0x9a9b780] decode_slice_header error
 [h264 @ 0x9a9b780] no frame!
 [mpegts @ 0x9a96200] PES packet size mismatch
 [ac3 @ 0x9a9a900] frame sync error
 [mpegts @ 0x9a96200] decoding for stream 0 failed
 [mpegts @ 0x9a96200] PES packet size mismatch
 [mpegts @ 0x9a96200] Could not find codec parameters for stream 0 (Audio:
 ac3 (AC-3 / 0x332D4341), 0 channels, fltp): unspecified sample rate
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mpegts, from 'input_cut.ts':
   Duration: 00:00:04.45, start: 19690.439156, bitrate: 4601 kb/s
   Program 7
     Metadata:
       service_name    : OMAN TV HD
       service_provider: ARABSAT
     Stream #0:0[0x6b8](ara): Audio: ac3 (AC-3 / 0x332D4341), 0 channels,
 fltp
     Stream #0:1[0x6e0]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25
 tbr, 90k tbn, 50 tbc
 At least one output file must be specified
 }}}
 {{{
 $ ffmpeg -acodec mp2 -i input_cut.ts
 ffmpeg version N-91445-g6cc6b61 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 4.3 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 21.104 / 58. 21.104
   libavformat    58. 17.101 / 58. 17.101
   libavdevice    58.  4.101 / 58.  4.101
   libavfilter     7. 25.100 /  7. 25.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] decode_slice_header error
 [h264 @ 0x9a9b700] no frame!
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] decode_slice_header error
 [h264 @ 0x9a9b700] no frame!
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 0 referenced
 [h264 @ 0x9a9b700] decode_slice_header error
 [h264 @ 0x9a9b700] no frame!
 [h264 @ 0x9a9b700] sps_id 0 out of range
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 1 referenced
 [h264 @ 0x9a9b700] sps_id 0 out of range
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 1 referenced
 [h264 @ 0x9a9b700] decode_slice_header error
 [h264 @ 0x9a9b700] no frame!
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 1 referenced
 [h264 @ 0x9a9b700] SPS unavailable in decode_picture_timing
 [h264 @ 0x9a9b700] non-existing PPS 1 referenced
 [h264 @ 0x9a9b700] decode_slice_header error
 [h264 @ 0x9a9b700] no frame!
 [mpegts @ 0x9a96240] PES packet size mismatch
     Last message repeated 1 times
 Input #0, mpegts, from 'input_cut.ts':
   Duration: 00:00:04.45, start: 19690.439156, bitrate: 4601 kb/s
   Program 7
     Metadata:
       service_name    : OMAN TV HD
       service_provider: ARABSAT
     Stream #0:0[0x6b8](ara): Audio: mp2 (AC-3 / 0x332D4341), 48000 Hz,
 stereo, s16p, 128 kb/s
     Stream #0:1[0x6e0]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25
 tbr, 90k tbn, 50 tbc
 At least one output file must be specified
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7309#comment:2>
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