Hey Miss Tiffany…i’ll try to cover everything if I can.
1. A typical DVD (@ 4.7GB) in “standard” mode is considered to 2 hours long or 1 hour in High Quality. So, the real number here is 1 hour. So, 2x would be 30 minutes, 4x would be 15 minutes, and 8x should be 7.5 minutes. This only refers to actual burning time and does not take into account drive spin-up/down and buffering.
So, it will depend on what kind of discs you use. The most common nowadays is 4x (as they’re ridiculously cheap now). So, it’s going to be 15-20 minutes on average for a full disc burn.
2. No, once a disc is burned, it’s not possible to burn over it. Most burners will see that it’s already written to and refuse to burn on them. Even DVD-RW/+RWs will refuse to be written on unless they’re properly erased.
3. I haven’t used DVDXCopy so I’m not sure. I just know that I find DVDShrink easy to use. Perhaps some else here can comment on this one.
4. Yes. DVDShrink needs some time to decode and re-encode the video to fit on your target disc. Don’t worry about it. It will just rip the video to a temporary directory on your hard disk and recompress it. When it’s done it will ask you for a blank disc.
5. It doesn’t matter. The speed of the TR’s optical drive and the 710’s is close enough that it shouldn’t matter. And, it really shouldn’t matter about which interface you’re using. The firewire interface may have less overhead but again, the TR is fast enough to handle it all.
6. Yeah, it’s going to be a while until 8.5GB discs are widely available since DL drives just came out. Also, they’re likely to be expensive until everyone is shipping DL drives (that are all compatible). And yes, by the time the discs are available, programs like DVDShrink will know that you can burn 8.5GB of data.
Hope that helps. :D