[FFmpeg-trac] #2714(undetermined:new): xvid: crash with lowres > 2

[FFmpeg]

#2714: xvid: crash with lowres > 2
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 attached file crashes ffmpeg when lowres >2 is used

 this seems to be related to asm code, no crash here with "-cpuflags 0"

 I will compile new build later to get a bt if crash is not reproducable


 {{{
 C:\>ffmpeg -vlowres 2 -i xvid.avi -an out.avi
 ffmpeg version N-54183-g1029822 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jun 25 2013 02:39:45 with gcc 4.5.0 (GCC) 20100414 (Fedora
 MinGW 4.5.
 0-1.fc14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
 cpudetect
 --enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -
 lwinmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snap
 shots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/s
 napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3
 --enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-
 libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-
 libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-
 decoder=libvpx
   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 @ 0x20de1e0] Invalid and inefficient vfw-avi packed B frames
 detected
 Input #0, avi, from 'xvid.avi':
   Duration: 00:00:12.64, start: 0.000000, bitrate: 454 kb/s
     Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID /
 0x44495658), yuv
 420p, 80x60 [SAR 1:1 DAR 4:3], 23.97 tbr, 23.97 tbn, 23.97 tbc
     Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p,
 128 k
 b/s
 [mpeg4 @ 0x20db6a0] too many threads/slices (5), reducing to 4
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.10.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 80x60 [SAR 1:1
 DAR 4
 :3], q=2-31, 200 kb/s, 23.97 tbn, 23.97 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg4 -> mpeg4)
 Press [q] to stop, [?] for help
 [mpeg4 @ 0x20fd7e0] Invalid and inefficient vfw-avi packed B frames
 detected
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2714>
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