[FFmpeg-trac] #2246(avcodec:open): ffmpeg freezes and eats 100% CPU

[FFmpeg]

#2246: ffmpeg freezes and eats 100% CPU
-------------------------------------+-------------------------------------
             Reporter:  divan        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  aac          |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:  freeze, avcodec, aac => aac regression
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 Regression since 72dabdf
 {{{
 $ /ffmpeg -i audio.wav -ar 11025 -ab 32k -strict -2 -y out.aac
 ffmpeg version N-49671-g199683c Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Feb  7 2013 12:02:55 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      52. 17.101 / 52. 17.101
   libavcodec     54. 91.101 / 54. 91.101
   libavformat    54. 61.104 / 54. 61.104
   libavdevice    54.  3.103 / 54.  3.103
   libavfilter     3. 35.101 /  3. 35.101
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Guessed Channel Layout for  Input Stream #0.0 : mono
 Input #0, wav, from 'audio.wav':
   Duration: 00:00:03.05, bitrate: 132 kb/s
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono,
 s16, 128 kb/s
 Output #0, adts, to 'out.aac':
   Metadata:
     encoder         : Lavf54.61.104
     Stream #0:0: Audio: aac, 11025 Hz, mono, fltp, 32 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> aac)
 Press [q] to stop, [?] for help
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2246#comment:1>
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