I believe that the gold version of NTI CD maker does not include the mpeg encoder... this is a feature of the "platinum" version.
The NTI video encoder is a pretty ordinary Honestech mpeg encoder, so you can use before burning any external video encoder you have handy to make your DVD comliant video streams. Honestech is surely nothing spectacular (although ages better that the Nero/Ligos embedded mpeg encoder, that's for sure...).