root@ungureanu-P5K-VM:~# ffmpeg -i corruptfile -f null -
ffmpeg version N-35890-g83b4671, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec 17 2011 17:29:18 with gcc 4.6.1
  configuration:
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 46. 0 / 53. 46. 0
  libavformat  53. 26. 0 / 53. 26. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
Truncating packet of size 1246311121 to 1543639
[siff @ 0xa38baa0] Estimating duration from bitrate, this may be inaccurate
Input #0, siff, from 'corruptfile':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: vb (VBV1 / 0x31564256), pal8, 320x240, 12 fps, 12 tbr, 12 tbn, 12 tbc
    Stream #0:1: Audio: pcm_u8, 22050 Hz, 1 channels, u8, 176 kb/s
[buffer @ 0xa3930e0] w:320 h:240 pixfmt:pal8 tb:1/1000000 sar:0/1 sws_param:
Incompatible sample format 'u8' for codec 'pcm_s16le', auto-selecting format 's16'
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf53.26.0
    Stream #0:0: Video: rawvideo, pal8, 320x240, q=2-31, 200 kb/s, 90k tbn, 12 tbc
    Stream #0:1: Audio: pcm_s16le, 22050 Hz, 1 channels, s16, 352 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (vb -> rawvideo)
  Stream #0:1 -> #0:1 (pcm_u8 -> pcm_s16le)
Press [q] to stop, [?] for help
[vb @ 0xa391d60] Invalid opcode seen @1085
[vb @ 0xa391d60] Invalid opcode seen @1337
[vb @ 0xa391d60] Invalid opcode seen @474
[vb @ 0xa391d60] Invalid opcode seen @607
[vb @ 0xa391d60] Invalid opcode seen @114
[vb @ 0xa391d60] Invalid opcode seen @105
[vb @ 0xa391d60] Invalid opcode seen @182
[vb @ 0xa391d60] Invalid opcode seen @90
[vb @ 0xa391d60] Frame size invalid
Error while decoding stream #0:0
[vb @ 0xa391d60] Frame size invalid
Error while decoding stream #0:0
frame=    8 fps=  0 q=0.0 Lsize=       0kB time=00:00:00.66 bitrate=   0.0kbits/s
video:0kB audio:3101kB global headers:0kB muxing overhead -100.000000%