[FFmpeg-trac] #2735(undetermined:new): h263 crash with low mem

FFmpeg trac at avcodec.org
Sat Jun 29 23:20:20 CEST 2013 

#2735: h263 crash with low mem
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 {{{
 (gdb) r -f h263 -max_alloc 120000 -i vble.avi -f null -
 The program being debugged has been started already.
 Start it from the beginning? (y or n) y

 Starting program: D:\MinGW\msys\1.0\ffmpeg-HEAD-7f866c1\ffmpeg_g.exe -f
 h263 -ma
 x_alloc 120000 -i vble.avi -f null -
 [New Thread 3932.0xb08]
 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
 [h263 @ 04c9e560] header damaged
     Last message repeated 2 times
 [h263 @ 04c9e560] Bad H263 id
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad H263 id
 [h263 @ 04c9e560] header damaged
     Last message repeated 1 times
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad UFEP type (2)
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] H263 SAC not supported
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 [h263 @ 04c9e560] warning: first frame is no keyframe
 [h263 @ 04c9e560] illegal dc 0 at 8 0
 [h263 @ 04c9e560] illegal ac vlc code at 8x0
 [h263 @ 04c9e560] Error at MB: 8
 [h263 @ 04c9e560] illegal ac vlc code at 1x3
 [h263 @ 04c9e560] Error at MB: 37
 [h263 @ 04c9e560] Error at MB: 64
 [h263 @ 04c9e560] concealing 77 DC, 77 AC, 77 MV errors in P frame
 Input #0, h263, from 'vble.avi':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: h263, yuv420p, 176x144 [SAR 12:11 DAR 4:3], 27.17
 fps, 2
 9.97 tbr, 1200k tbn, 29.97 tbc
 [New Thread 3932.0x96c]
 [New Thread 3932.0xc7c]
 [New Thread 3932.0xbcc]
 [New Thread 3932.0xe70]
 [New Thread 3932.0xba4]
 [New Thread 3932.0xfa0]
 [New Thread 3932.0xf0]
 [New Thread 3932.0xe58]
 [New Thread 3932.0x9e8]
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf55.10.100
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 176x144
 [SAR 12:1
 1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (h263 -> rawvideo)
 Press [q] to stop, [?] for help
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad H263 id
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad H263 id
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad UFEP type (2)
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] H263 SAC not supported
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] warning: first frame is no keyframe
 [h263 @ 04c9e560] illegal dc 0 at 8 0
 [h263 @ 04c9e560] illegal ac vlc code at 8x0
 [h263 @ 04c9e560] Error at MB: 8
 [h263 @ 04c9e560] illegal ac vlc code at 1x3
 [h263 @ 04c9e560] Error at MB: 37
 [h263 @ 04c9e560] Error at MB: 64
 [h263 @ 04c9e560] concealing 77 DC, 77 AC, 77 MV errors in P frame
 [null @ 04d72ac0] Encoder did not produce proper pts, making some up.
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Bad marker
 [h263 @ 04c9e560] header damaged
 Error while decoding stream #0:0: Error number -1 occurred
 [h263 @ 04c9e560] Cannot allocate memory.

 Program received signal SIGSEGV, Segmentation fault.
 ff_MPV_frame_start (s=0x4c9ee60, avctx=0x4c9e560)
     at libavcodec/mpegvideo.c:1513
 1513                    &s->picture[i] != s->next_picture_ptr &&
 (gdb) bt
 #0  ff_MPV_frame_start (s=0x4c9ee60, avctx=0x4c9e560)
     at libavcodec/mpegvideo.c:1513
 #1  0x0068cffa in ff_h263_decode_frame (avctx=0x4c9e560, data=0x4d4a400,
     got_frame=0x22fa9c, avpkt=0x22f768) at libavcodec/h263dec.c:649
 #2  0x005968ba in avcodec_decode_video2 (avctx=0x4c9e560,
 picture=0x4d4a400,
     got_picture_ptr=0x22fa9c, avpkt=0x22f898) at libavcodec/utils.c:1947
 #3  0x0041286c in decode_video (got_output=<optimized out>,
     pkt=<optimized out>, ist=<optimized out>) at ffmpeg.c:1654
 #4  output_packet (ist=0x4ca1c00, pkt=0x22fbe0) at ffmpeg.c:1852
 #5  0x004154db in process_input (file_index=80474016) at ffmpeg.c:3064
 #6  0x00aef098 in transcode_step () at ffmpeg.c:3160
 #7  transcode () at ffmpeg.c:3212
 #8  main (argc=10, argv=<optimized out>) at ffmpeg.c:3390
 (gdb)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2735>
FFmpeg <http://ffmpeg.org>
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