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

FFmpeg trac at avcodec.org
Sat Dec 20 14:13:12 CET 2014


#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 Kamedo2):

 Klaussfreire, sorry for the slow response.

 Yes, the assertion error only happens when the {{{-aac_coder}}} is
 {{{anmr}}}.
 FFmpeg_anmr_error6 and FFmpeg_anmr_error7 crashes at the beginning of the
 file, but I've found 4 music tracks (out of hundreds) that crashes at the
 middle of the file.
 I failed to reproduce the results after cutting to distributable short
 clips.

 Also I have listened to hundreds of songs encoded by v9b {{{anmr}}} and
 {{{twoloop}}} and I have found no apparent problems so far.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:355>
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