[FFmpeg-trac] #2099(avformat:closed): FFMPEG Does not allow TrueHD, DTS-Master Audio or DTS in .M4V even though format supports it

[FFmpeg]

#2099: FFMPEG Does not allow TrueHD, DTS-Master Audio or DTS in .M4V even though
format supports it
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             Reporter:  JohnGalt     |                    Owner:
                 Type:  enhancement  |                   Status:  closed
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mov dca thd  |  needs_more_info
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Replying to [comment:49 JohnGalt]:
 > The ticket isn't about not being able to decode the file. The ticket is
 about not being able to encode the file!

 I understand that, please read the following:
 I originally asked for "proof" that it makes sense to allow muxing TrueHD
 mov/isom. (I expected that this is would not be possible but otoh I
 couldn't know if you have access to Dolby reference software - that quite
 certainly allows to test and verify - or not.) You did not present any
 such hint that it makes sense if FFmpeg allows muxing TrueHD into mov (on
 the contrary imo). But please read on because from your point of you, this
 does not matter!

 The mov/isom muxer/demuxer is written in a way that makes sure that every
 format that can be read automatically can also be written (in a possibly
 wrong way but still).
 So if you provide a sample with TrueHD in mov/isom that cannot be read by
 FFmpeg and it will be fixed, the fix automatically / unintentionally will
 also bring muxing. (One could argue that we should strongly avoid that
 because the world already knows enough invalid media files, but this is
 not relevant for this ticket.)

 > Thus FFMPEG needs to fix support for encoding M4V with TRUEHD AND DTS-
 MA. That's the point.

 Are you sure that writing DTS-MA in isom does not work? I thought it works
 fine.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2099#comment:50>
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