[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples

[FFmpeg]

#2686: Native AAC encoder collapses at high bitrates on some samples
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             Reporter:  Kamedo2      |                    Owner:
                 Type:  defect       |  klaussfreire
             Priority:  normal       |                   Status:  open
              Version:  git-master   |                Component:  avcodec
             Keywords:  aac          |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by atomnuker):

 Huh, that's odd. The changes which I made to PNS today (at 12:39 UTC,
 commit b6cc8ec7ec) brought PNS closer to what it used to be before but
 fixed the warbling artifacts at lower frequencies (it's used alot more
 now). The changes to the IS which fixed the bug yesterday (1956cfbaedd36)
 shouldn't really have done much to the quality at all and I didn't hear a
 difference.

 74961-g61009a7 is before I made my PNS changes from yesterday, so are you
 sure that the last current git master still sounds worse? The PNS commit I
 made yesterday did reduce PNS usage too much (before I fixed that today).

 Either way, I'll take a listen to what the encoder sounded like before and
 try to see if it's better in the current master.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:409>
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