How decrease size of VOBs keeping compatibility with original IFOs ?

[mattbag]

I've tried to "rempeg" my vobs, but once their size decreased, my original IFO files are buging IFOedit and I can't Get Vectors anymore between my new VOB and old IFO...
So, I tried to demuxed my original streams on HDD to author a complete new DVD with IFOEdit BUT I lost original menu and structures!! And ReMpeg2 doesn't accept raw M2V file!!

So, how can I simply copy a DVD-9 content to one DVD-5, keeping the original structure, exatly the same menu, same extras BUT, just decreasing video stream quality?

Thanks a lot guys!!
Mattbag

PS : I'm actually using DVDDecrypter IFO and File modes, IFOedit and ReMpeg2 but perhaps you'll advice some better tools to me (excuse my english, I'm french)
Salut et merci d'avance!
:confused:

[waldok]

I think your issue is pretty much fully covered in the Guide called "DVD-9 to DVD-5 "Full Copy" Instructions".

Did you check it ? I used it with grat success, just reencoding the movie and keeping the other stuff "as is".

Waldok:cool: