Originally Posted by airspeed
ps I have a Philips 3575H dvdr with a hard drive. I put it in my signature but I don't see it there.
Why is the hard drive relevant in this discussion, citibear?
The hard drive is relevant because if a dvd recorder has that feature, it makes this type of multi-source editing much MUCH easier. When I posted my initial answer, it appeared you were recording your tapes directly onto a dvd using a dvd-only or dvd-vhs model, neither of which has a hard drive. Since you've now confirmed you're using a Phillips 3575, which DOES have an HDD, perhaps we can help you do this project more efficiently.
First we need we need to know how comfortable or familiar you are with your 3575 and its various features like recording speeds and copying from HDD to DVD. This isn't clear from your earlier posts, which sort of imply you're recording directly onto dvds. If that is in fact what you were doing, it is the more difficult and less precise way to go about it.
A better method is to copy all the tapes to the hard drive section of your 3575. Once on the HDD, the Phillips will let you divide the recordings into different parts and trim bad spots like where the camcorder was turned on and off. You can also name each segment to keep track of what came from 8mm and what came from VHS-C. After the recordings are edited and named, you can easily copy them to a dvd in whatever order you need (say, ten minutes from 8mm, then five mins from VHS-C, then seven minutes from 8mm, etc). After the dvd is made, it will play back with just a slight hesitation between segments.
The HDD section of your 3575 is optimized for editing videos BEFORE they get burned to dvd: this editing ability is the key reason people used to pay more for the HDD feature. If you bypass the HDD, and copy your tapes directly onto a dvd straight from the VCR, the edits will not be as precise (and doing it in real time during recording can be tedious and tricky). Recording direct to dvd also reduces your options in case of a mistake: if you screw up the dvd, you have to start over again from scratch. If you mess up on the HDD, you only need to re-edit or re-copy the part that is wrong, while most of the video can be re-used..
My apologies if these are points you already knew, but if you didn't, it would be a great idea for you to get an overview by looking at the index of the huge Magnavox/Phillips thread at the top of this dvd recorder forum. Complete instructions on how to record to the HDD, edit, then high-speed copy to a final DVD are explained fairly well in that thread. It really is the best workflow for making dvds from VHS or 8mm: I can't imagine going straight to dvd anymore. After I tried the HDD>DVD feature, I never looked back.