Merging VCDs to DVD

[cesera]

I have a series of ten VCDs that I would like to merge onto DVD. My
thinking was that a CD holds about 700MB of data, a DVD about 4Gb, so I
should be able to put 5 VCDs onto a DVD. However I have been trying to
do this now for 3 days and I am still no further. I have played with
vcdxrip, ffmpeg, mpeg2enc, (q)dvdauthor and several other tools and I
have no luck.



Has anyone got an idea on how to do this? I have found several windows
tutorials on this subject, so it should be possible, but I don't seem
to be able to do it.



My problem always ends with dvdauthor, no matter what I do I keep
getting hunderds of lines that say:



WARN: Skipping sector, waiting for first VOBU...



My last attempted to insert the VOBUs was something like this:


Code:
--------------------
    ffmpeg -i fromvcdxrip.mpg -target ntsc-svcd -s 352x240 -r 29.97 - | mpeg2dec -s -o pgmpipe | pgmtoy4m -i p | mpeg2enc -f 8 -n p -v 0 -o myvcd1.mpg
--------------------


I thought that the '-f 8' option in mpeg2enc would insert the VOBUs,
but no such luck.



I am probably trying this the hard way, does anyone know of a better
way to achieve what I am trying, ie. reduce 5 VCDs to 1 DVD? (I don't
need a high picture quality, I am starting with the VCDs so I am happy
with that quality, I just would like to have a lot less disks.)


-- 
cesera