[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):

 [[Image(http://i41.tinypic.com/28mo7jn.png)]]
 Very strange behavior, and whitenoise.flac at -q:a 1 completely lacks LF
 contents.
 Somehow, this encoder tends to omit the lowest tone in white noise which
 is audible.
 -q:a 1.7 and -q:a 2.7 (the peak of bitrate) of whitenoise.flac is strange,
 too.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:81>
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