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

FFmpeg trac at avcodec.org
Tue Mar 10 16:15:58 CET 2015


#2686: Native AAC encoder collapses at high bitrates on some samples
-------------------------------------+-------------------------------------
             Reporter:  Kamedo2      |                    Owner:
                 Type:  defect       |  klaussfreire
             Priority:  normal       |                   Status:  open
              Version:  git-master   |                Component:  avcodec
             Keywords:  aac          |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by klaussfreire):

 Actually, the 12 was there because swb_size_N were of size 12. The patch
 added another entry, so it'd now be size 13. But instead of using 13, I
 replaced it by sizeof which is easier to maintain.

 i == 16 is there so that the code doesn't depend on the size of
 swb_size_N. The above loop that searches for the samplerate_index ends at
 16, so 16 means the search didn't find anything, and that's also an error
 independent of whether i is out of bounds for swb_size_N.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:370>
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