[FFmpeg-trac] #4005(avformat:open): Support transport streams with changing pid (was: TS file partially decoded)

FFmpeg trac at avcodec.org
Sun Oct 5 01:22:36 CEST 2014


#4005: Support transport streams with changing pid
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  Underground78                      |                   Status:  open
                 Type:  enhancement  |                Component:  avformat
             Priority:  wish         |               Resolution:
              Version:  git-master   |               Blocked By:
             Keywords:  mpegts       |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  undetermined => avformat
 * priority:  normal => wish
 * keywords:   => mpegts
 * type:  defect => enhancement


Comment:

 One way of showing the issue is the following command line:
 {{{
 $ ffmpeg -skip_initial_bytes 10919300 -i 00000002_4_0.ts -qscale 2 out.avi
 ffmpeg version N-66608-g550f3e9 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Oct  5 2014 01:11:33 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54.  9.100 / 54.  9.100
   libavcodec     56.  2.101 / 56.  2.101
   libavformat    56.  7.104 / 56.  7.104
   libavdevice    56.  1.100 / 56.  1.100
   libavfilter     5.  1.102 /  5.  1.102
   libswscale      3.  1.100 /  3.  1.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  1.100 / 53.  1.100
 [mpeg2video @ 0x1a55620] Invalid frame dimensions 0x0.
     Last message repeated 10 times
 [mpegts @ 0x1a50d60] decoding for stream 1 failed
 [mpegts @ 0x1a50d60] PES packet size mismatch
     Last message repeated 1 times
 [mpegts @ 0x1a50d60] Could not find codec parameters for stream 1 (Video:
 mpeg2video ([2][0][0][0] / 0x0002)): unspecified size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mpegts, from '00000002_4_0.ts':
   Duration: 00:02:23.47, start: 57965.971300, bitrate: 2923 kb/s
   Program 1
     Stream #0:2[0x48](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #0:3[0x49]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv), 704x576 [SAR 16:11 DAR 16:9], max. 15000 kb/s, 25 fps, 25
 tbr, 90k tbn, 50 tbc
   No Program
     Stream #0:0[0x46](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
 stereo, s16p, 192 kb/s
     Stream #0:1[0x47]: Video: mpeg2video ([2][0][0][0] / 0x0002), 25 fps,
 25 tbr, 90k tbn, 90k tbc
 Please use -q:a or -q:v, -qscale is ambiguous
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf56.7.104
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 704x576 [SAR
 16:11 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc56.2.101 mpeg4
     Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo,
 fltp, 192 kb/s
     Metadata:
       encoder         : Lavc56.2.101 ac3
 Stream mapping:
   Stream #0:3 -> #0:0 (mpeg2video (native) -> mpeg4 (native))
   Stream #0:0 -> #0:1 (mp2 (native) -> ac3 (native))
 Press [q] to stop, [?] for help
 [mpegts @ 0x1a50d60] PES packet size mismatchme=00:02:07.40
 bitrate=2456.3kbits/s
     Last message repeated 1 times
 [mp2 @ 0x1ab6340] incomplete frame
 Error while decoding stream #0:0: Invalid data found when processing input
 [mpeg2video @ 0x1ad9100] ac-tex damaged at 16 12
 [mpeg2video @ 0x1ad9100] Warning MVs not available
 [mpeg2video @ 0x1ad9100] concealing 1056 DC, 1056 AC, 1056 MV errors in B
 frame
 frame= 3500 fps=1030 q=2.0 Lsize=   46222kB time=00:02:24.76
 bitrate=2615.7kbits/s
 video:46114kB audio:11kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.209484%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4005#comment:1>
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