well I imagine that the PC ones work the same as CD writers do, either reading on the fly from a seperate dvd drive you might have, or if you don't have a seperate drive, then dumping a copy of the image to your hard drive first before writing it onto a blank DVD-R (or +R) then deleting the image after it's copied. Which means if you only have one drive you'll usually need about 8 or 9 gigs of space free to do dual layered disk copies.
Now dual layered dvd media is pretty expensive still, so it's not really a hugely viable option till it comes down in price. (last I checked standing around 10 dollars per blank dvd). Till then you might want to try using single layered blank dvds which are half the size (about 4.7 gigs each). However if you download a free program like Dvd Shrink you'll be able to compress a full dual layered image to about half the size. As of yet I've yet to experience any noticable loss of quality when doing so, I imagine it would be even less so for animated works. Single layered blank DVDs only cost about 1 dollar each in comparison.
Great thing is though, the companies making dual layered dvd writers are only treating that new feature as a small step up from only writing single layered dvds (thus the price didn't increase very much). As well they are backwards compatible with the cheaper format. So you might as well get a dual layered dvd writer and burn a few single layered disks for now, then switch to dual media when they come down in price.
Hope this helps.
Now dual layered dvd media is pretty expensive still, so it's not really a hugely viable option till it comes down in price. (last I checked standing around 10 dollars per blank dvd). Till then you might want to try using single layered blank dvds which are half the size (about 4.7 gigs each). However if you download a free program like Dvd Shrink you'll be able to compress a full dual layered image to about half the size. As of yet I've yet to experience any noticable loss of quality when doing so, I imagine it would be even less so for animated works. Single layered blank DVDs only cost about 1 dollar each in comparison.
Great thing is though, the companies making dual layered dvd writers are only treating that new feature as a small step up from only writing single layered dvds (thus the price didn't increase very much). As well they are backwards compatible with the cheaper format. So you might as well get a dual layered dvd writer and burn a few single layered disks for now, then switch to dual media when they come down in price.
Hope this helps.