[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples

FFmpeg trac at avcodec.org
Wed Sep 11 07:37:46 CEST 2013


#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):

 Oops, -b:a 128k, not -b:a 96k in the 128kbps exp+v4 column.
 By the way, why is the FFT used in LPF? Couldn't it use MDCT and simply
 zeroing higher coefficients? Maybe I am missing something.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:149>
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