[FFmpeg-trac] #4175(swresample:new): support phase shift for Dolby Pro Logic II / Dolby matrix downmix

[FFmpeg]

#4175: support phase shift for Dolby Pro Logic II / Dolby matrix downmix
-------------------------------------+-------------------------------------
             Reporter:  ranutso      |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  swresample
             Keywords:  dplii        |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by otonvm):

 I'm sorry but I must disagree.
 And by just listening to those samples you could easily hear the
 difference yourself.

 I belive whatever Surcode produces is a reliable reference, my qaac matrix
 matches it (therefore also what's noted on wikipedia) but most importantly
 it sounds right.

 Any other audio that identifies each channel and mixes between each
 channel produces the same results.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4175#comment:10>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker