[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       |                   Status:  open
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  aac          |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by klaussfreire):

 Replying to [comment:63 Kamedo2]:
 > Aren't you trying to access s->bit_rate when it's VBR? Or am I missing
 something?

 Yes, bit_rate in that case holds the default of 128kbps. Psy does the
 same, but it works well since that's considered to be AAC's transparent
 rate. So, for VBR, you make psy work at transparent settings, and
 compensate bit allocation based on RD scaling.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:65>
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