[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 Kamedo2):

 I think we should hardcode min(cutoff+2500, cutoff*1.2). When cutoff is
 18kHz, cutoff*1.2 is 21.6kHz which is too high. Could you provide the
 relation between -q:a value and cutoff so we can have better grasp on
 what's happening?

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:96>
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