[FFmpeg-trac] #1219(undetermined:new): zerocodec: crash

FFmpeg trac at avcodec.org
Sun Apr 15 19:04:52 CEST 2012


#1219: zerocodec: crash
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 looks like this codec is buggy and accepts all (even not supported) pixel
 formats as an input, anyway ffmpeg crashes with attached file (which
 decodes incorrectly with original codec)

 {{{
 (gdb) r -i crash.avi out.avi
 Starting program: d:\mingw\msys\1.0\ffmpeg-head-7432bcf\ffmpeg_g.exe -i
 crash.av
 i out.avi
 [New Thread 1508.0xd04]
 ffmpeg version 0.10.2.git-7432bcf Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr 15 2012 01:02:52 with gcc 4.6.1
   configuration: --disable-ffprobe
   libavutil      51. 46.100 / 51. 46.100
   libavcodec     54. 14.101 / 54. 14.101
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 70.100 /  2. 70.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 11.100 /  0. 11.100
 Input #0, avi, from 'crash.avi':
   Duration: 00:00:00.04, start: 0.000000, bitrate: 21003 kb/s
     Stream #0:0: Video: zerocodec (ZECO / 0x4F43455A), uyvy422, 320x240,
 25 tbr,
  25 tbn, 25 tbc
 Incompatible pixel format 'uyvy422' for codec 'mpeg4', auto-selecting
 format 'yu
 v420p'
 [buffer @ 039e1460] w:320 h:240 pixfmt:uyvy422 tb:1/1000000 sar:0/1
 sws_param:fl
 ags=2
 [buffersink @ 039e1760] auto-inserting filter 'auto-inserted scale 0'
 between th
 e filter 'src' and the filter 'out'
 [scale @ 039e2320] w:320 h:240 fmt:uyvy422 sar:0/1 -> w:320 h:240
 fmt:yuv420p sa
 r:0/1 flags:0x4
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf54.3.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240,
 q=2-31, 200
  kb/s, 25 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (zerocodec -> mpeg4)
 Press [q] to stop, [?] for help

 Program received signal SIGSEGV, Segmentation fault.
 0x005d2fb6 in zerocodec_decode_frame (avctx=0x39dc760, data=0x39e3d60,
     data_size=0x22e900, avpkt=0x22e698) at libavcodec/zerocodec.c:84
 84                      dst[j] += prev[j] & -!dst[j];
 (gdb) bt
 #0  0x005d2fb6 in zerocodec_decode_frame (avctx=0x39dc760, data=0x39e3d60,
     data_size=0x22e900, avpkt=0x22e698) at libavcodec/zerocodec.c:84
 #1  0x00500aeb in avcodec_decode_video2 (avctx=0x39dc760,
 picture=0x39e3d60,
     got_picture_ptr=0x22e900, avpkt=0x22e7f0) at libavcodec/utils.c:1432
 #2  0x00406dad in transcode_video (pkt_pts=<optimized out>,
     got_output=<optimized out>, pkt=<optimized out>, ist=<optimized out>)
     at ffmpeg.c:2122
 #3  output_packet (ist=0x39e1a20, ost_table=0x39e1d80, nb_ostreams=1,
     pkt=0x22fbf0) at ffmpeg.c:2292
 #4  0x0040ca68 in transcode (output_files=0x39e1ee0, nb_output_files=1,
     input_files=0x39e1ae0, nb_input_files=1) at ffmpeg.c:3163
 #5  0x0022ff48 in ?? ()
 Backtrace stopped: Not enough registers or memory available to unwind
 further
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1219>
FFmpeg <http://ffmpeg.org>
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