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I have an MXF file that contains 16 audio tracks. I know the first two tracks (stereo) contain Dolby E compressed video. Using MediaInfo (gui) it lists 16 audio streams with a mix of Dolby E and PCM as shown in this link:

MediaInfo GUI

I need a way to get this information from the command line. I tried "ffmpeg -i channel_mapping_1080i2997_5.1_2_comp.mxf -f null -" but it shows 16 PCM tracks:

  Stream #0:1: Audio: pcm_s24be, 48000 Hz, hexadecagonal, s32 (24 bit), 18432 kb/s
...
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> wrapped_avframe (native))
  Stream #0:1 -> #0:1 (pcm_s24be (native) -> pcm_s16le (native))

Can ffmpeg or some other command line program be used to obtain this information? I specifically need to know which audio tracks contain compressed data and which are PCM.

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  • Have you tried ffprobe -print_format json -show_format -show_streams? Does it also claim all are PCM? Are you 100% sure that they're not PCM?
    – Attie
    Apr 1 at 20:34
  • Try: ffprobe -v error -select_streams a -show_entries stream=index,codec_name -of csv=p=0 channel_mapping_1080i2997_5.1_2_comp.mxf
    – Rotem
    Apr 1 at 20:48
  • Support for identifying Dolby-E in MXF is disabled in ffmpeg, likely because there was no decoder at the time. Can you share a small sample?
    – Gyan
    Apr 2 at 5:12
  • Attie, Rotem: Neither of these commands gave any additional information than what I already had. Gyan: I think you are probably right about ffmpeg.
    – kfank
    Apr 2 at 23:28

1 Answer 1

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MediaInfo has a command line version (which I did not know about when I posted my question). It looks like that gives all the information I need.

$ mediainfo --Inform="Audio;%ID%  %Format%\n" channel_mapping_1080i2997_5.1_2_comp.mxf 
3-1 / 2-1  Dolby E
3-1 / 2-2  Dolby E
3-3  PCM
3-4  PCM
3-5  PCM
3-6  PCM
3-7  PCM
3-8  PCM
3-9  PCM
3-10  PCM
3-11  PCM
3-12  PCM
3-13  PCM
3-14  PCM
3-15  PCM
3-16  PCM

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