Thanks Spot,

So it is you opinion that there should be no difference between 2X and 4X. I am using Ritek / Didata 4X DVD-Rs with a 4X Lite-On burner.

If you are using DVDA for burning be advised that when set to 1x it actually burns at 2x using most media I have tested. I use Ritek G04 mostly.

John

I have found that the G04 blanks are so robust they do a great job even at 8x for my own personal use. But for official 8x burning, I just ordered my first batch of G05 blanks. I plan to stick with G05s until dual-layer gets cheap and fast (1 or 2 years).

The only time I've had burn speed realted issues with DVDs was when I burnt 4x media at 2x.
The isssue is even more prominent with mastering audio CDs, I get much better error rates buring at 20x than at 8x. Both are mastering grade media, the slower stuff made for 1x to 12x burners but the more modern stuff is way better. In general the faster the media spins the more gyro force to stabilise it and thus less jitter. Of course if its cheap media that's badly out of balance then you might do better at a slower speed.
The really big thing that no one is talking about with high burn speed DVDs is the effect of the thinner dye layer on longevity. Seeing as how DVD +/-R media will not last that long anyway maybe it doesn't matter that much anyway.
Bob.

Recording optical media at a slower speed than the media is rated for is probably no longer a good idea. On some burners, the laser will tend to "overburn" the pits on the optical media and make them less distinct and harder to read.

John

Is there an inexpensive program to scan the burned DVD for errors before sending ti out for replication?