[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):

 v5 vbr is still quite worse than the abr. I feel that whenever tonal
 sounds are there, the frequency bin around the tone degrades. Tones are
 poorer at hiding other sounds than the noise, that's why harpsichords
 remains to be one of the most critical and hardest instruments to code.
 http://wiki.hydrogenaudio.org/index.php?title=Perceptual_Noise_Substitution

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:166>
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