[FFmpeg-trac] #2706(avcodec:new): Native AAC encoder produces warbling with pure aevalsrc sine wave

[FFmpeg]

#2706: Native AAC encoder produces warbling with pure aevalsrc sine wave
------------------------------------+-----------------------------------
             Reporter:  MarkZV      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  aac         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Kamedo2):

 I reproduced the warbling effect, on recent ffmpeg N-54096-ge41bf19 I've
 got from git, and one ffmpeg version 1.2.1. The warbling was reproduced
 using the flac file above.
 {{{
 ffmpeg -i sine440Hz_24bit.flac -vn -c:a aac -strict experimental -b:a 128k
 sin440Hz_24bit.mp4
 }}}

 Both versions were tested and bitrate 0k, 16k, 32k, ......, 240k, 256k was
 tested.
 I listened to the 34 mp4 files and any files above 64k had a serious
 warbling.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2706#comment:4>
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