[FFmpeg-trac] #7938(undetermined:closed): 7.1 Surround Channels Different in DTS-HD & Atmos Playback

FFmpeg trac at avcodec.org
Mon Jun 3 20:45:44 EEST 2019


#7938: 7.1 Surround Channels Different in DTS-HD & Atmos Playback
-------------------------------------+-------------------------------------
             Reporter:  me02         |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:  invalid
             Keywords:  dts          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by mkver):

 * resolution:  worksforme => invalid


Comment:

 And the CAF file doesn't contain the
 [https://developer.apple.com/library/archive/documentation/MusicAudio/Reference/CAFSpec/CAF_spec/CAF_spec.html#//apple_ref/doc/uid/TP40001862-CH210-BCGCIJCF
 channel layout chunk] which is mandatory as the number of channels is > 2.
 This of course implies that FFmpeg (or any other tool) is free to map the
 channels in the file to any position it sees fit (or even to refuse to
 play the file at all). And this makes this issue invalid.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7938#comment:7>
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