I still had the latest version of 16 installed, and same results there...
MediaInfo
Format : AVI
Format/Info : Audio Video Interleave
File size : 78.5 MiB
Duration : 3mn 32s
Overall bit rate : 3 103 Kbps
ID : 0
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)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 3mn 32s
Bit rate : 2 709 Kbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 3:2
Frame rate : 23.976 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.327
Stream size : 68.5 MiB (87%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
ID : 1
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : 2000
Duration : 3mn 32s
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 9.71 MiB (12%)
Alignment : Aligned on interleaves
Interleave, duration : 32 ms (0.77 video frame)