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

Comment (by Kamedo2):

 I notice that the LPF on some short blocks is not working in at least -q:a
 0.3 and 0.4.

 [[Image(http://i42.tinypic.com/okor9c.png)]]
 ||=Stereo Bitrate=||=VBR number=||
 ||32||0.14||
 ||64||0.25||
 ||96||0.33||
 ||128||0.39||
 ||160||0.46||
 ||192||0.55||

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:85>
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