d:\>ffmpeg.exe -i src.mxf -map 0:0 video.mxf -map 0:1 audio1.mxf -map 0:2 audio2.mxf
ffmpeg version N-89395-g71421f382f Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreet
ype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-
libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --en
able-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
  libavutil      56.  5.100 / 56.  5.100
  libavcodec     58.  6.102 / 58.  6.102
  libavformat    58.  2.103 / 58.  2.103
  libavdevice    58.  0.100 / 58.  0.100
  libavfilter     7.  6.100 /  7.  6.100
  libswscale      5.  0.101 /  5.  0.101
  libswresample   3.  0.101 /  3.  0.101
  libpostproc    55.  0.100 / 55.  0.100
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Input #0, mxf, from 'src.mxf':
  Metadata:
    uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
    generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
    company_name    : FFmpeg
    product_name    : OP1a Muxer
    product_version : 58.2.103
    product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
    material_package_umid: 0x060A2B340101010501010D0013B77AA25294713435B77AA2005294713435B700
    timecode        : 00:00:00:00
  Duration: 00:00:16.76, start: 0.000000, bitrate: 52582 kb/s
    Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
    Metadata:
      file_package_umid: 0x060A2B340101010501010D0013B77AA25294713435B77AA2005294713435B701
      file_package_name: Source Package for K2C/V:/default/A020708
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D0013B77AA25294713435B77AA2005294713435B701
      file_package_name: Source Package for K2C/V:/default/A020708
    Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D0013B77AA25294713435B77AA2005294713435B701
      file_package_name: Source Package for K2C/V:/default/A020708
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native))
  Stream #0:1 -> #1:0 (pcm_s24le (native) -> pcm_s16le (native))
  Stream #0:2 -> #2:0 (pcm_s24le (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[mxf @ 000000aefbed22e0] there must be exactly one video stream and it must be the first one
Could not write header for output file #1 (incorrect codec parameters ?): Operation not permitted
Error initializing output stream 1:0 --
Conversion failed!