the length of avi is wrong

[lidarren]

the right information of the avi is below
Format : OGG
File size : 696 MiB
Duration : 1h 0mn
Overall bit rate : 1 619 Kbps

Video
ID : 0 (0x0)
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : 2
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Muxing mode : Packed bitstream
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 1h 0mn
Bit rate : 1 498 Kbps
Width : 576 pixels
Height : 432 pixels
Display aspect ratio : 4:3
Frame rate : 29.970 fps
Original frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.201
Stream size : 644 MiB (93%)
Writing library : XviD 1.1.0 Beta1 (UTC 2005-01-16)

Audio
ID : 1 (0x1)
Format : Vorbis
Format settings, Floor : 1
Duration : 1h 0mn
Bit rate mode : Constant
Bit rate : 48.0 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 20.7 MiB (3%)
Writing library : libVorbis 1.0 (UTC 2002-07-17)

but when I paly the vedio ,wmp 12 suggests the time of the vedio is 18 hours. the code is lav

[Shark007]

The posted file information is not for an AVI file.
Change AVI to OGM.