I burned a whole anime serie consisting of 12 episodes + teaser + soundtrack to DVD.
Source was 640x480 (ergo 4:3) ~800kbit/s DivX + 128kbit/s MP3, as many DVD-ripped animes are.
I encoded the video in SVCD mode (480x480, setting display flags to 4:3), just lowering the average bitrate (2-passed) to 1800kbit/s.
Audio was converted to 224kbit/s
48KHz.
So except the audio frequency it's pretty much a svcd.
Then I followed a WinOnCD 6 DVD-Edition guide I found on doom9, since WinOnCD can be very tolerant when authoring DVDs.
The result was a non-standard DVD with 480x480 video which plays fine on all (2

) DVD-Players I've tested so far. Yeah, of course they have to be svcd capable.