[FFmpeg-trac] #5152(undetermined:closed): Broken B frames while copying MPEG-2 ibp without recompression from some point

FFmpeg trac at avcodec.org
Tue Jan 12 13:12:59 CET 2016


#5152: Broken B frames while copying MPEG-2 ibp without recompression from some
point
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  Aleksandr_Slobodeniuk              |                   Status:  closed
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |  needs_more_info
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by Aleksandr_Slobodeniuk):

 {{{
 C:\data>ffmpeg -i opengop.mxf -ss 3 -t 1 -c copy result.mov
 ffmpeg version N-77782-g42c54d4 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-
 libcaca --
 enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
 --enable-l
 ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enab
 le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
 librtmp --en
 able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
 --ena
 ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-
 amrwbenc
  --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
 --enabl
 e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-
 libzimg --
 enable-lzma --enable-decklink --enable-zlib
   libavutil      55. 13.100 / 55. 13.100
   libavcodec     57. 22.100 / 57. 22.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 [mxf @ 00920960] index entry 124 + TemporalOffset 1 = 125, which is out of
 bound
 s
 Guessed Channel Layout for  Input Stream #0.1 : mono
 Input #0, mxf, from 'opengop.mxf':
   Metadata:
     uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
     generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
     company_name    : FFmpeg
     product_name    : OP1a Muxer
     product_version : 57.21.101
     product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
     modification_date: 0000-01-01 00:00:00
     material_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F6005
 29471341B1200
     timecode        : 00:00:00:00
   Duration: 00:00:05.00, start: 0.000000, bitrate: 51910 kb/s
     Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, bt709), 1920x1080
 [SAR 1
 :1 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
     Metadata:
       file_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F600529
 471341B1201
     Stream #0:1: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit),
 1152 kb/s

     Metadata:
       file_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F600529
 471341B1201
 File 'result.mov' already exists. Overwrite ? [y/N] y
 [mov @ 009b3e40] Codec for stream 0 does not use global headers but
 container fo
 rmat requires global headers
 [mov @ 009b3e40] Codec for stream 1 does not use global headers but
 container fo
 rmat requires global headers
 Output #0, mov, to 'result.mov':
   Metadata:
     uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
     generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
     company_name    : FFmpeg
     product_name    : OP1a Muxer
     product_version : 57.21.101
     product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
     modification_date: 0000-01-01 00:00:00
     material_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F6005
 29471341B1200
     timecode        : 00:00:00:00
     encoder         : Lavf57.21.101
     Stream #0:0: Video: mpeg2video (m2v1 / 0x3176326D), yuv422p, 1920x1080
 [SAR
 1:1 DAR 16:9], q=2-31, 50000 kb/s, 25 fps, 25 tbr, 12800 tbn, 25 tbc
     Metadata:
       file_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F600529
 471341B1201
     Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono (24
 bit),
 1152 kb/s
     Metadata:
       file_package_umid:
 0x060A2B340101010501010D00131205F6529471341B1205F600529
 471341B1201
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 frame=   17 fps=0.0 q=-1.0 Lsize=    3655kB time=00:00:01.00
 bitrate=29943.0kbit
 s/s speed=76.9x
 video:3512kB audio:141kB subtitle:0kB other streams:0kB global headers:0kB
 muxin
 g overhead: 0.065367%

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5152#comment:9>
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