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

FFmpeg trac at avcodec.org
Tue Oct 13 21:02:07 CEST 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):

 Neither anmr, faac or fast were modified.

 It is possible that they need to be updated to avoid the crashing,
 although I don't see how exactly. You could try confirming whether earlier
 revisions also exhibit that behavior, and how far back.

 `faac` will probably be scrapped, `fast` will have to be rewritten, and
 `anmr` is a big question mark at present. I've been working on ANMR and
 some problems have surfaced that don't seem easy to resolve, or at all
 possible with ANMR's approach. Surely it can be made not to crash, but
 beyond that I'm unsure how far we can push ANMR.

 For now, the priority is `twoloop`.

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Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:432>
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