NEC 3500A DVD writer with rip lock removed and 2.18 FW
W2K SP1/WXP Pro SP1 (dual boot)
Any DVD 126.96.36.199 and CloneDVD 188.8.131.52
Rip speed can be 5 to 10% faster in W2K. That makes sense since W2K is a lighter OS.
With some protected DVDs (King Arthur), the CPU load will stay at 100% throughout the rip session. This will generally yield a rip speed around 5.5X to 6X (I burn at 4X). Other DVDs (Independence Day Special Edition) will only rip around 2.5X. The CPU will fluctuate between 20 and 100%. Both discs are clean and free from scratches. I maintain 100% video quality and will split the movie if required.
The nominal rip speed for most discs is around 4.2X. I've also used a DVD ROM for ripping. Again, no significant changes in rip speed.
I'm aware that a faster PC will improve the rip speed. Could various methods of encryption cause the rip speed variations? The only other variable would be the disc.
It is also possible to improve rip speed by changing the update frequency of the picture snapshot during transcoding. But when I right click on the picture, I don't see a menu to change the update frequency. Do I have to go back to the title selection screen to do this?
During transcoding, there's a graph that shows the original and transcoded data. Sometimes, the original data is at the top of the transcoded data stream. There will be occasions when I see all transcoded or all original data. And what about those i-frames, p-frames, and b-frames. How do I interpret these data?