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

FFmpeg trac at avcodec.org
Sun Jul 21 03:44:24 CEST 2013


#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):

 Replying to [comment:65 klaussfreire]:
 > Yes, bit_rate in that case holds the default of 128kbps. Psy does the
 same, but it works well since that's considered to be AAC's transparent
 rate.
 >
 AAC is not transparent in 128kbps stereo, although Apple used to advertise
 that way. http://d.hatena.ne.jp/kamedo2/20111029/1319840519

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:68>
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