It could be possible. I think the main thing about the kvcd templates was that it used CQ (constant quality) and a customized
quantize matrix.
If you have access to these items in MC, plug in the values and give it
a try.
Let us know how it comes out.
Don't know about TMPGEnc template's but you can make your own to use in MC quite easily. Just input your setting's and save it at options>save profile and it will appear as a choice in the MPEG type dropdown box.
The problem I have is that I am a dumb novice (not with computers) with implementing these kinds of values in Mainconcept.
I can look in each of the TMPGenc's templates using notepad, but I am not sure which ones would go in which place in the "Details" options in Mainconcept MPEG Encoder, etc.
If I knew what values I would use to make a 120 minute PALKVCD encoded by Mainconcept, I would surely do it.
The problem with Tempgenc 2.5 is that on my system it will not load any movie with a corresponding SRT file, I've tried everything I have read on the internet, ffdshow priorty etc and nothing works, TMPGenc crashes on opening itself if there is an srt file there