zzuf .avi hangs FFMPEG

[Oana Stratulat]

==4531== Memcheck, a memory error detector
==4531== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==4531== Using Valgrind-3.6.1-Debian and LibVEX; rerun with -h for copyright info
==4531== Command: ffmpeg -i corruptfile -f null -
==4531==
ffmpeg version N-36003-gf27930c, Copyright (c) 2000-2011 the FFmpeg developers

built on Dec 20 2011 23:45:11 with gcc 4.6.1
configuration:
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 46. 1 / 53. 46. 1
libavformat 53. 27. 0 / 53. 27. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0

Input #0, avi, from 'corruptfile':

Duration: 00:00:01.66, start: 0.000000, bitrate: 1522 kb/s

Stream #0:0: Video: msmpeg4v1 (MPG4 / 0x3447504D), yuv420p, 524640x240, 29.97 tbr, 29.97 tbn, 29.97 tbc

[buffer @ 0x58a4460] w:524640 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
==4531== Warning: set address range perms: large range [0x393c9080, 0x6dc5bd90) (undefined)
Output #0, null, to 'pipe:':

Metadata:

encoder : Lavf53.27.0
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 524640x240, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc

Stream mapping:

Stream #0:0 -> #0:0 (msmpeg4v1 -> rawvideo)

Press [q] to stop, ? for help
[msmpeg4v1 @ 0x58a3900] cbpc 4 invalid at 3 0
[msmpeg4v1 @ 0x58a3900] Error at MB: 3
[msmpeg4v1 @ 0x58a3900] I frame too long, ignoring ext header
[msmpeg4v1 @ 0x58a3900] concealing 491850 DC, 491850 AC, 491850 MV errors
==4531==
==4531== HEAP SUMMARY:
==4531== in use at exit: 1,341,077,466 bytes in 73 blocks
==4531== total heap usage: 164 allocs, 91 frees, 1,564,297,554 bytes allocated
==4531==
==4531== LEAK SUMMARY:
==4531== definitely lost: 0 bytes in 0 blocks
==4531== indirectly lost: 0 bytes in 0 blocks
==4531== possibly lost: 0 bytes in 0 blocks
==4531== still reachable: 1,341,077,466 bytes in 73 blocks
==4531== suppressed: 0 bytes in 0 blocks
==4531== Rerun with --leak-check=full to see details of leaked memory
==4531==
==4531== For counts of detected and suppressed errors, rerun with: -v
==4531== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 4 from 4)