[FFmpeg-trac] #2018(undetermined:open): Wrong duration of mpeg-ps file

FFmpeg trac at avcodec.org
Wed Dec 12 15:28:04 CET 2012


#2018: Wrong duration of mpeg-ps file
-------------------------------------+-------------------------------------
             Reporter:  zoominla     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:
              Version:  git-master   |  undetermined
             Keywords:  mpegps       |               Resolution:
  mpeg2video                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * priority:  normal => minor
 * status:  new => open
 * version:  unspecified => git-master
 * reproduced:  0 => 1


Comment:

 Sample uploaded to http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2018/
 Duration is detected correctly if the last 4k are cut from the sample,
 this does not change the output of -f framecrc.
 {{{
 $ ffmpeg -i DreamComeTrue.mpg -f null -
 ffmpeg version N-47767-g0f23634 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Dec 12 2012 15:10:59 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 12.100 / 52. 12.100
   libavcodec     54. 79.102 / 54. 79.102
   libavformat    54. 49.101 / 54. 49.101
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 26.102 /  3. 26.102
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [mpeg @ 0x1623280] max_analyze_duration 5000000 reached at 5016000
 Input #0, mpeg, from 'DreamComeTrue.mpg':
   Duration: 22:19:26.98, start: 0.213000, bitrate: 14 kb/s
     Stream #0:0[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 256 kb/s
     Stream #0:1[0x1c1]: Audio: mp2, 48000 Hz, stereo, s16p, 256 kb/s
     Stream #0:2[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [SAR
 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf54.49.101
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480
 [SAR 8:9 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
     Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
 Stream mapping:
   Stream #0:2 -> #0:0 (mpeg2video -> rawvideo)
   Stream #0:0 -> #0:1 (mp2 -> pcm_s16le)
 Press [q] to stop, [?] for help
 [null @ 0x162ad80] Encoder did not produce proper pts, making some up.
 00 motion_type at 40 200.0 size=       0kB time=00:03:38.06 bitrate=
 0.0kbits/s
 [mpeg2video @ 0x1654c40] Warning MVs not available
 [mpeg2video @ 0x1654c40] concealing 450 DC, 450 AC, 450 MV errors in P
 frame
 frame= 7712 fps=2586 q=0.0 Lsize=       0kB time=00:04:17.32 bitrate=
 0.0kbits/s dup=2 drop=0
 video:723kB audio:48218kB subtitle:0 global headers:0kB muxing overhead
 -100.000000%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2018#comment:4>
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