AnyDVD Information Two layers Opposite &

vbimport

#1

AnyDVD Information Two layers Opposite & two layers paralell. I have serious problems ripping the discs with the information given as 2 layers Opposite but no problems ripping discs 2 layers paralell. What is the difference? And why does my BenQ1640 read them differently.


#2

Opposite (OTP) and Parallel (PTP) are 2 different ways a DVD9 is mastered. In OTP layer 0 starts at middle of the disc and works towards the outside, layer 1 then starts where layer 0 stopped and heads back into the middle of the disc.

PTP again layer 0 starts at the middle and works towards the outside, then layer 1 also starts at the middle and works towards the outside.

At present all DL burners can only burn OTP.

As to why you are having problems ripping OTP discs I have no idea - sorry!!


#3

Well I do not have any problems with my other burners, just the BenQ1640 and its not just me. There is a whole thread of people experiencing slow ripping with OTP disc and my burner can rip and burn PTP, I may not understand what you mean by “At present all DL burners can only burn OTP.”


#4

Regardless of how the disc is mastered OTP or PTP if you are backing up onto a DL disc it can only be burned OTP


#5

@abrown: I really do not understand most of this but I really appreciate your input. All I know is that when using AnyDVD and the BenQ1640 with OTP discs they cannot be ripped at speeds equal to PTP discs. I have tested this a number of time in the past week. I am trying to figure a “workaround” but I don’t know if this is possible.


#6

It happens. Traditionally, MOST dual-layer discs were mastered OTP. And MOST drives read OTP more slowly than PTP. I know all of mine do. Why is this? I just don’t know.


#7

So what you are saying is that my BenQ1640 is not defective, but I would like to know why my riplock removed NEC does not have this problem. The BenQ 1640 is not suppossed to have a riplock and it is not ripping at the speeds D/L OTP only that it is suppossed to.