You have to then compress it to an MPEG-2 for DVD-Video format.
I use the currently ~$500
MainConcept Reference application for this task, as it really gives some of the best quality possible.
More details and buy options at
http://esd.element5.com/affiliate.ht...ainconcept.com
But another option is to use the $37
TMPGEnc Plus.
The Matrox codecs slow the loading of video software. For VirtualDub, that slowness comes when accessing the codecs window (via Video > Compression). For other programs, that may happen when the program starts, as many of them check system-wide codecs at that time. It should be available after maybe 10-20 seconds on my somewhat faster systems. If your computer is slow, then maybe give it a minute. I've not yet heard of Matrox codecs messing up a computer.