Oh well that idea of two laserdisc players' capture merged idea is out of the window then.

I am right now burning off the first DL DVD of ANH in NTSC

edit: .....which turned into a £2.40 coaster

Been reading up & downloading latest versions of stuff so hopefully 2nd time lucky.

edit 2: another £2.40 fecking coaster

if I can't get a successful burn out of these 10 DL discs I'll go single-layer instead, putting the extras from the films on a 4th disc

edit 3: third time 90% lucky, flashed the burner to the most recent firmware and I can play the DVD, almost, running low on harddrive space so the ISO was fragmented and couldn't read the data off the hd fast enough so near the layer change the disc becomes unreadable, however the picture quality is amazing compared to the single layer DVDShrink version I was testing on a RW disc for the menus etc.
Now on burn number 4, 94% done and another 50 mins till the verify is complete (wish they'd hurry up and make them cheaper/faster)