[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
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------

Comment (by atomnuker):

 Well, thanks for the feedback.
 I'll add back the 4+ quantization factor for the PNS energy tommorow
 morning. I've tested other decoders (to make sure it's not the ffmpeg
 decoder causing issues) so I have no idea why there's such an energy
 difference, but apparently that 4+ was enough to make PNS sound right.

 As for the L, R, M and S signal/noise ratio, did you test that without
 PNS? That could have interfered. Could you tell me if IS sounded better
 before or after without PNS?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:411>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker