acc enc crash with low mem

[ami_stuff]

​http://ffmpeg.org/trac/ffmpeg/raw-attachment/ticket/2722/divx.avi

found while testing #2730

C:\>ffmpeg -max_alloc 70000 -i divx.avi -vn -acodec aac -strict -2 -f null -
ffmpeg version N-54178-gbbe26ef Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun 24 2013 17:10:38 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
  libavutil      52. 37.101 / 52. 37.101
  libavcodec     55. 17.100 / 55. 17.100
  libavformat    55.  9.100 / 55.  9.100
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 77.101 /  3. 77.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mpeg4 @ 029a8000] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'divx.avi':
  Duration: 00:00:12.64, start: 0.000000, bitrate: 963 kb/s
    Stream #0:0: Video: mpeg4 (DX50 / 0x30355844), yuv420p, 320x240 [SAR 1:1 DAR
 4:3], 23.97 tbr, 23.97 tbn, 30k tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
b/s
[aac @ 02aa5560] Cannot allocate memory.

[ami_stuff]

(gdb) r -max_alloc 70000 -i divx.avi -vn -acodec aac -strict -2 -f null -
Starting program: D:\MinGW\msys\1.0\ffmpeg-HEAD-7f866c1\ffmpeg_g.exe -max_alloc
70000 -i divx.avi -vn -acodec aac -strict -2 -f null -
[New Thread 2368.0xb50]
ffmpeg version 1.1.git-7f866c1 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun 29 2013 22:13:29 with gcc 4.6.2 (GCC)
  configuration: --disable-ffprobe --disable-yasm --disable-w32threads --enable-
gpl
  libavutil      52. 37.101 / 52. 37.101
  libavcodec     55. 17.100 / 55. 17.100
  libavformat    55. 10.100 / 55. 10.100
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 77.101 /  3. 77.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mpeg4 @ 04ca6dc0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'divx.avi':
  Duration: 00:00:12.64, start: 0.000000, bitrate: 963 kb/s
    Stream #0:0: Video: mpeg4 (DX50 / 0x30355844), yuv420p, 320x240 [SAR 1:1 DAR
 4:3], 23.97 tbr, 23.97 tbn, 30k tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
b/s
[New Thread 2368.0x658]
[New Thread 2368.0xbac]
[New Thread 2368.0xedc]
[New Thread 2368.0xd7c]
[New Thread 2368.0xc00]
[New Thread 2368.0xf58]
[New Thread 2368.0x9a8]
[New Thread 2368.0xd8c]
[New Thread 2368.0xe30]
[aac @ 04c9e3a0] Cannot allocate memory.

Program received signal SIGSEGV, Segmentation fault.
0x00b33cd4 in ff_psy_end (ctx=0x4ca9390) at libavcodec/psymodel.c:78
78          if (ctx->model->end)
(gdb) bt
#0  0x00b33cd4 in ff_psy_end (ctx=0x4ca9390) at libavcodec/psymodel.c:78
#1  0x00b15fdb in aac_encode_end (avctx=0x4c9e3a0) at libavcodec/aacenc.c:676
#2  0x00b1640b in aac_encode_init (avctx=0x4c9e3a0) at libavcodec/aacenc.c:784
#3  0x0059a44e in avcodec_open2 (avctx=0x4c9e3a0, codec=<optimized out>,
    options=0x4c9e8c0) at libavcodec/utils.c:1309
#4  0x004113b2 in transcode_init () at ffmpeg.c:2439
#5  0x00aeea82 in transcode () at ffmpeg.c:3183
#6  main (argc=13, argv=<optimized out>) at ffmpeg.c:3390
(gdb)

[Carl Eugen Hoyos]

Patch sent:
​http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/165439

[Carl Eugen Hoyos]

Should be fixed, thank you for the report!