[FFmpeg-trac] #3646(avformat:closed): caf muxer doesn't write correct format id in desc chunk for ALAC

[FFmpeg]

#3646: caf muxer doesn't write correct format id in desc chunk for ALAC
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             Reporter:  nu774        |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avformat
              Version:  unspecified  |               Resolution:  wontfix
             Keywords:  caf          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  1            |
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Changes (by cehoyos):

 * analyzed:  0 => 1
 * status:  new => closed
 * resolution:   => wontfix


Comment:

 The caf specification says that Apple Lossless in caf {{{has no format
 flags.}}}

 Apple's own (muxing and demuxing) implementation is apparently different
 but since this requires some (minor) effort and the resulting files could
 theoretically be rejected by overcautious demuxers and would not fix any
 existing demuxers, I suggest not to change current FFmpeg behaviour.

 Please reopen if the specification I read is outdated (was changed) or I
 misunderstood or if there is software that requires the format flags for
 alac.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3646#comment:2>
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