Invalid channel layout '0x0' when processing an MXF with 16 channel audio

[shroomM]

Summary of the bug:
Trying to convert a 16 channel audio of an MXF file fails.
The file was recorded by an Omneon playout system.

Sample file (130 MB):
​https://dl.dropbox.com/u/132558/16ch.mxf

How to reproduce:

ffmpeg -v 9 -loglevel 99 -i 16ch.mxf -map 0:a -c:a pcm_s24le audio.wav
ffmpeg version N-36011-gf1470ca Copyright (c) 2000-2012 the FFmpeg developers
  built on Nov 24 2012 09:44:06 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --enable-gpl --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  libavutil      52.  8.100 / 52.  8.100
  libavcodec     54. 76.100 / 54. 76.100
  libavformat    54. 37.100 / 54. 37.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 23.102 /  3. 23.102
  libswscale      2.  1.102 /  2.  1.102
  libswresample   0. 17.101 /  0. 17.101
  libpostproc    52.  2.100 / 52.  2.100
[mxf @ 0x290e220] Format mxf probed with size=2048 and score=100
[mxf @ 0x290e220] invalid KAGSize 0 - guessing 1
[mxf @ 0x290e220] invalid KAGSize 0 - guessing 1
[mxf @ 0x290e220] index entry 381 + TemporalOffset 1 = 382, which is out of bounds
[mxf @ 0x290e220] File position before avformat_find_stream_info() is 180354
[mxf @ 0x290e220] Probe buffer size limit 5000000 reached
rfps: 24.083333 0.018822
    Last message repeated 1 times
rfps: 24.166667 0.015556
    Last message repeated 1 times
rfps: 24.250000 0.012600
    Last message repeated 1 times
rfps: 24.333333 0.009956
    Last message repeated 1 times
rfps: 24.416667 0.007622
    Last message repeated 1 times
rfps: 24.500000 0.005600
    Last message repeated 1 times
rfps: 24.583333 0.003889
    Last message repeated 1 times
rfps: 24.666667 0.002489
    Last message repeated 1 times
rfps: 24.750000 0.001400
    Last message repeated 1 times
rfps: 24.833333 0.000622
    Last message repeated 1 times
rfps: 24.916667 0.000156
    Last message repeated 1 times
rfps: 25.000000 0.000000
rfps: 25.083333 0.000156
rfps: 25.166667 0.000622
rfps: 25.250000 0.001400
rfps: 25.333333 0.002489
rfps: 25.416667 0.003889
rfps: 25.500000 0.005600
rfps: 25.583333 0.007622
rfps: 25.666667 0.009956
rfps: 25.750000 0.012600
rfps: 25.833333 0.015556
rfps: 25.916667 0.018822
rfps: 49.083333 0.018822
    Last message repeated 1 times
rfps: 49.166667 0.015556
    Last message repeated 1 times
rfps: 49.250000 0.012600
    Last message repeated 1 times
rfps: 49.333333 0.009956
    Last message repeated 1 times
rfps: 49.416667 0.007622
    Last message repeated 1 times
rfps: 49.500000 0.005600
    Last message repeated 1 times
rfps: 49.583333 0.003889
    Last message repeated 1 times
rfps: 49.666667 0.002489
    Last message repeated 1 times
rfps: 49.750000 0.001400
    Last message repeated 1 times
rfps: 49.833333 0.000622
    Last message repeated 1 times
rfps: 49.916667 0.000156
    Last message repeated 1 times
rfps: 50.000000 0.000000
rfps: 50.083333 0.000156
rfps: 50.166667 0.000622
rfps: 50.250000 0.001400
rfps: 50.333333 0.002489
rfps: 50.416667 0.003889
rfps: 50.500000 0.005600
rfps: 50.583333 0.007622
rfps: 50.666667 0.009956
rfps: 50.750000 0.012600
rfps: 50.833333 0.015556
rfps: 50.916667 0.018822
[mxf @ 0x290e220] File position after avformat_find_stream_info() is 5305906
Input #0, mxf, from '16ch.mxf':
  Metadata:
    timecode        : 08:26:17:02
  Duration: 00:00:15.00, start: 0.000000, bitrate: 69798 kb/s
    Stream #0:0, 14, 1/25: Video: mpeg2video (4:2:2), yuv422p, 1920x1080 [SAR 3:4 DAR 4:3], 1/50, 25 fps, 25 tbr, 25 tbn, 50 tbc
    Stream #0:1, 14, 1/48000: Audio: pcm_s24be, 48000 Hz, 16 channels, s32, 18432 kb/s
File 'audio.wav' already exists. Overwrite ? [y/N] y
Setting entry with key 'time_base' to value '1/48000'
[abuffer @ 0x290cce0] Setting entry with key 'sample_rate' to value '48000'
[abuffer @ 0x290cce0] Setting entry with key 'sample_fmt' to value 's32'
[abuffer @ 0x290cce0] Setting entry with key 'channel_layout' to value '0x0'
[graph 0 input from stream 0:1 @ 0x290b560] Invalid channel layout '0x0'
Error opening filters!
Statistics: 5191292 bytes read, 3 seeks

[Carl Eugen Hoyos]

I am assuming that the channel layout for the file is not defined and this is a duplicate of ticket #1763.

Please reopen if the channel layout for this file is defined but FFmpeg ignores it.