WinDVD filters video with deinterlacers, so what you see there is not necessarily "true" to the MPEG either.
The best player for previewing MPEG DVD-Video is VLC. It will show the interlaced signal, and then you can opt in to a deinterlacer for actual watching on a computer.
Windows Media Player is good for high-def WMV and ASF files, and that's about it -- just the Microsoft proprietary formats. WMP was good in the 90s, but that ended .. well... a decade ago.
Glad you got it figured out!
Hybrid Mode
