[FFmpeg-trac] #6380(undetermined:new): incorrect ULs when creating MXF with DNxHD

[FFmpeg]

#6380: incorrect ULs when creating MXF with DNxHD
-------------------------------------+-------------------------------------
             Reporter:  go4shoe      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  MXF, DNxHD   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Use any audio/video file and transcode to MXF with DNxHD video.
 Ffmpeg uses the incorrect ULs for the essence container and and essence
 element.

 correct essence container = MXF-GC Frame-wrapped VC-3 Pictures:
 06 0E 2B 34 04 01 01 0A 0D 01 03 01 02 11 01 00

 incorrect by ffmpeg: essence container = wrong version number (byte 8):
 06 0E 2B 34 04 01 01 01 0D 01 03 01 02 11 01 00

 correct essence element = MXF_GC_VC3_FRAME_PICTURE_ELEMENT:
 06 0E 2B 34 01 02 01 0A 0D 01 03 01 15 01 0C 00

 incorrect ffmepg essence element = MXF_GC_MPEG_FRAME_PICTURE_ELEMENT:
 06 0E 2B 34 01 02 01 01 0D 01 03 01 15 01 05 00

 see SMPTE ST 2019-4:2016; 6.1 Essence Element Key; Table 1 – Key Value for
 the VC-3 Picture Element (page 6)

 How to reproduce:

 {{{

 ffmpeg.exe -i any_a_v_file.mp4 -vcodec dnxhd -vf "scale=1280:720" -b:v 75M
 -ar 48000 ffmpeg_dnxhd_output.mxf


 Y:\tools\ffmpeg-3.3>ffmpeg_g.exe -version
 ffmpeg version N-85950-g8ef2c79 Copyright (c) 2000-2017 the FFmpeg
 developers
 built with Microsoft (R) C/C++ Optimizing Compiler Version 18.00.40629 for
 x86
 configuration: --optflags=-Od --disable-asm --disable-yasm --arch=i386
 --disable-avdevice --disable-ffserver --disable-doc --enable-static
 --disable-bzlib --dis
 able-libopenjpeg --disable-iconv --disable-zlib --prefix=/c/ffmpeg
 --toolchain=msvc
 libavutil      55. 61.100 / 55. 61.100
 libavcodec     57. 94.101 / 57. 94.101
 libavformat    57. 72.101 / 57. 72.101
 libavfilter     6. 88.100 /  6. 88.100
 libswscale      4.  7.101 /  4.  7.101
 libswresample   2.  8.100 /  2.  8.100
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6380>
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