[FFmpeg-trac] #4868(undetermined:new): Unable to perform mpeg-ts lossless copy with seek

FFmpeg trac at avcodec.org
Sat Sep 19 23:31:42 CEST 2015


#4868: Unable to perform mpeg-ts lossless copy with seek
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  bruno.chartier                     |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |               Blocked By:
  undetermined                       |  Reproduced by developer:  0
             Keywords:  mpegts ss    |
  copy seek                          |
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 ffmpeg is unable to find frames in the video stream and produces an empty
 file.
 The mpegts is produced by Fujitsu hardware encoder (MB86H46).
 Tried a few versions of ffmpeg, a few from the last 6 months and an old
 one from 2010, on Mac and Linux with the same result.

 How to reproduce:

 sample file uploaded to
 ftp://upload.ffmpeg.org/incoming/cannot_copy_video_with_seek.ts

 {{{
 [xx]$ ~/perso/ffmpeg  -ss 5 -i cannot_copy_video_with_seek.ts -c:v copy
 -an -y trimmed.ts
 ffmpeg version 2.8-tessus Copyright (c) 2000-2015 the FFmpeg developers
   built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM
 3.5svn)
   configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm
 --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
 --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm
 --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger
 --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab
 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-
 libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-
 libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-
 ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
   libavutil      54. 31.100 / 54. 31.100
   libavcodec     56. 60.100 / 56. 60.100
   libavformat    56. 40.101 / 56. 40.101
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 40.101 /  5. 40.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.101 /  1.  2.101
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, mpegts, from 'cannot_copy_video_with_seek.ts':
   Duration: 00:00:11.67, start: 1.450000, bitrate: 6639 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 90k tbn, 120 tbc
 Output #0, mpegts, to 'trimmed.ts':
   Metadata:
     encoder         : Lavf56.40.101
     Stream #0:0: Video: h264 ([27][0][0][0] / 0x001B), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 60 fps, 60 tbr, 90k tbn, 90k tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A
 video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4868>
FFmpeg <https://ffmpeg.org>
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