[FFmpeg-trac] #9996(ffmpeg:open): Write joc_complexity_index to dec3 (EAC3SpecificBox), Windows and Android need it to play atmos (was: When remuxing dolby atmos mkv to mp4, complexity index is not present.)

[FFmpeg]

#9996: Write joc_complexity_index to dec3 (EAC3SpecificBox), Windows and Android
need it to play atmos
------------------------------------+----------------------------------
             Reporter:  BlueWindy   |                    Owner:  (none)
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  ffmpeg
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+----------------------------------
Changes (by Balling):

 * version:  unspecified => git-master
 * summary:  When remuxing dolby atmos mkv to mp4, complexity index is not
     present. =>
     Write joc_complexity_index to dec3 (EAC3SpecificBox), Windows and
     Android need it to play atmos

Comment:

 This is issue here:
 https://github.com/FFmpeg/FFmpeg/blob/a577d313b2c14c855ab8aa69bbe3527bd7727212/libavformat/movenc.c#L646

 it needs to write one extra byte and set flag_ec3_extension_type_joc to
 true of this is atmos stream (nowadays we support Atmos recognition, but
 not decoding).
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9996#comment:10>
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