[FFmpeg-trac] #6447(avcodec:closed): libavcodec mjpeg huffman code segfaults with -qscale:v 2 on gcc 6.3.0

FFmpeg trac at avcodec.org
Tue Jul 18 13:16:19 EEST 2017


#6447: libavcodec mjpeg huffman code segfaults with -qscale:v 2 on gcc 6.3.0
-------------------------------------+-------------------------------------
             Reporter:  echa         |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  mjpeg crash  |  worksforme
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => closed
 * resolution:   => worksforme


Comment:

 {{{
 $ ffmpeg -i test.mp4 -an -vframes 1 -q:v 2 -huffman optimal -f image2
 test.jpeg
 ffmpeg version N-86395-g497a4b5 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --enable-nonfree --enable-avresample
 --enable-avfilter --enable-postproc --enable-pic --enable-pthreads
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --disable-doc --disable-decoder=prores --disable-protocols --disable-
 network --disable-ffplay --disable-ffprobe --disable-ffserver --enable-
 protocol=file
   libavutil      55. 63.100 / 55. 63.100
   libavcodec     57. 96.101 / 57. 96.101
   libavformat    57. 72.101 / 57. 72.101
   libavdevice    57.  7.100 / 57.  7.100
   libavfilter     6. 91.100 /  6. 91.100
   libavresample   3.  6.  0 /  3.  6.  0
   libswscale      4.  7.101 /  4.  7.101
   libswresample   2.  8.100 /  2.  8.100
   libpostproc    54.  6.100 / 54.  6.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.56.100
   Duration: 00:00:05.00, start: 0.000000, bitrate: 150 kb/s
     Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc,
 bt709), 1280x720 [SAR 1:1 DAR 16:9], 147 kb/s, 25 fps, 25 tbr, 12800 tbn,
 50 tbc (default)
     Metadata:
       handler_name    : VideoHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
 Press [q] to stop, [?] for help
 Output #0, image2, to 'test.jpeg':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.72.101
     Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 1280x720 [SAR 1:1 DAR
 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc57.96.101 mjpeg
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
 frame=    1 fps=0.0 q=2.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 speed=1.86x
 video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6447#comment:2>
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