[FFmpeg-trac] #11503(avcodec:new): AC-3 downmix levels defaulting to 1.414 with recent decoder changes

[FFmpeg]

#11503: AC-3 downmix levels defaulting to 1.414 with recent decoder changes
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             Reporter:  Wallboy      |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  ac3          |               Blocked By:
  resampling downmix                 |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Wallboy):

 ''"Have you checked patch above?"''

 yes, it's not relevant code for rematrixing 5.1 -> 2.0.

 ''"when no metadata present" would not that metadata always be present
 when encoded with Dolby Media Encoder?''

 The file I've been testing with is an **E-AC-3** file. I should have made
 that clearer, sorry. In E-AC-3 there is a bit (mixmdate) that specifies if
 mixing levels/downmix mode is present. In my test file, there wasn't.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11503#comment:4>
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