Ripping speed

[Firk99]

I'm a bit puzzled. Today I ripped a commercial DVD5 (single layer) and the ripping speed went up to 15,6 on a 16-speed Sony DVD-rom.
It took me less than 5 minutes to rip the disk.
Yesterday I backed-up another commercial DVD, this was an DVD9 (2 layers). It took me about 17 minutes. Does the reader hace more problems reading a 2-layer disk than a single-layer disk ?
It would be more logical if it took about 10 minutes instead of 17.

Anyone has an explication for this ?

Greetz

[mob]

it could be that it had more encryption to go through...

[Firk99]

Both disks have CSS encryption and regioncode.

[Firk99]

Anyone ?

[ZippyP.]

Yup, dual layer disks only typically rip at up to 9x max., don't know why.

[TheCollector]

I think it has to do with the reflectivity of the disc, dual layer have only half the reflection of a single layer and I believe that´s the reason and therefore
it´s "harder" for the drive to read the data.

If you read you´re drive specification, (hopefully) you will find information about that your drive reads dual layer slower.

[jimmalenko]

I believe that the ripping speed is determined by how many encrypted sectors there are on the DVD. Some encrypt every second sector while some encrypt hardly any at all. Smartripper goves you the stats on how many sectors are encrypted and how many are not.

[TheCollector]

But all drives on the market reads a DVD9 slower than a DVD5, just read the technical specification and you will see.