After some cracking with pioneer, i think that there is something that can be usefull.
For those who canīt play the KVCDx3 and the 352x480, try to encode the file as mpeg-2, and if you have, ( like my case ) another standalone that do not handle mpeg-2 very well, do like this :
Make the movie as Mpeg-2, then, when the movie is ready, mux as video-cd non standard, it will work on pioneer and others...
I really didnīt test in lots of standalones, but works with Sony, Pioneer, and a Phillips ( dontīremember the model of it ).
Plus, doing this you gain from mpeg-2 a little mbīs ( ive encoded at mpeg-2 results 750Mb. Passing to Mpeg-1 it got down to 722 ).
Well, i donīt really know if this is the answer to the pioneers, but, itīs an idea.
So give it a try, who can.
Pacodoni