Don't have no clue as to what you did wrong, but there are several of us that have done a hundred or more Blurays to DVD using ConvertXtoDVD.
And as I stated, you could just input the original m2ts file without the need of using x264 first, via Handbrake, BDRebuilder, or RipBot.
But if I were to use x264, I'd be more inclined to use BDRebuilder to at least output to BD structure, then use ConvertXtoDVD afterwards.....
But Nero Vision's encoding sucks, that's the main issue with what you suggested. Might even be better off using DVDflick after Handbrake if you must, but if free was essential, I'd go with AVStoDVD first.
Oh, no offense taken, I personally think nero went to shit about 3 versions ago when they decided they needed to include everything and the kitchen sink in their software. Whenever someone tries to do that, its inevitable that they will screw it up and the customer will end up with some half assed software. I have no doubt that vision sucks, but I was just trying to offer something to the pc crowd, as im 95% MAC, but i realize that 95% of this forum is probably pc. Thats why I suggested in my post for someone to post some other freeware that would do the same thing nero and toast do.
thanks though.. I will try AVStoDVD.