Ive done some standard VCD and standard SVCD. This is what You can get in the different methods on a 80 min CDR. All with GOOD quality viewed on a TV through a decoder card
VCD CBR 80 minutes (Flask + Pana plugin)
SVCD CBR 40 minutes (Flask + bbMPEG)
SVCD VBR ca 70 minutes (Flask + bbMPEG)
and just now Im study an other interesting altarnativ, its
VCD VBR (max 2200b/s). Its looks VERY good and its possible to fit 120 minutes on one CDR. (Flask + bbMPEG).
Ive only done some tests with MPEG4, and all I seen is less quality than all above.