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millsy
31st August 2002, 06:44
Have a Pioneer 115 DVD 16x, have tried to put it all different spots on IDE Channels, changed ATA drivers etc, changed IDE Cables... checked DMA in Intel Application Driver Companion ...says its going at Ultra DMA 2, But when I put in a DVD while in WinXp it never fully spins up, and when going into SpeedRipper, only rips at between 4-6x.....used to go at 16x in Win98 and only take 3mins.....now takes about 14mins...any ideas?

Cheers
Millsy

P3 800
Gigabyte GA-60X
IDE 0: 2 Hard Drives
IDE 1: Master : Liteon 481240
Slave : Pioneer 115 DVD

sarahjh69
3rd September 2002, 20:53
sounds about right to me!

speed of ripping depends where the movie is on the dvd
inner edge......slow
outer edge......fast

6x seems a pretty good speed to me........in winXP
sometimes i rip at 9x, but thats only near the outer edge.
(using a creative 12x)

also XP is very iffy with DMA, slows things down a lot!
i had a liteon 163 +winXP...took 12mins to copy a full dvd-rw
had a look and it was in pio mode4 using 100 percent cpu

switched back to winME...took 5 mins to copy same dvd-rw
with a cpu usage of 33 percent.

Dezoris
6th September 2002, 08:08
This usually depends on the movie you are ripping.
Someone can correct me if I am wrong but, unlike audio CDs which don't have encrption DVD's use encrypted data, so it is not just a straight read, and hence your actual read speed is reduced.

sarahjh69
7th September 2002, 14:09
encryption is irrelavent
I rip dvds at about 30% cpu usage on a celeron 1200
it would only be slowed down if cpu usage approached 100%

its only where the movie is physically on the disk that
affects ripping speed. (thats why it depends on the movie)

Chu
7th October 2002, 07:58
Keep in mind 16xDVD is 22.08 MB/s. I don't think my hard drive is that fast . . .

-Chu

TRILIGHT
16th October 2002, 20:54
Originally posted by sarahjh69
encryption is irrelavent

It's actually quite relevant. Key searching, etc. is going to slow the process down. You'll notice this if you've ever ripped a DVD that was not encrypted. (ie. The Cube, Tart) Those that are not encrypted rip MUCH faster than those that are encrypted. That being said, the 6x speed is fairly average for that particular DVD drive. (I have the same drive) Just be thankful it's not the painfully slow 2x max you'll see off of the burner! ;) I went out and bought the Pioneer reader just to save myself the hassle of waiting at 2x speed.

sarahjh69
17th October 2002, 17:07
i stand by my post

and you might like to know i have my ripping
software set to find 1 key only and its always
worked......looks like they only use 1 key per dvd
and if you search for more you are just wasting your time!

alexnoe
17th October 2002, 18:51
@TRILIGHT

You are wrong. The limits for CSS dvds are fully artificially implemented and primarily made to avoid noise while replaying the disc. Time wasting key searching is obsolete and has been fixed in SmartRipper.

TRILIGHT
17th October 2002, 21:10
I use DVD Decryptor. Perhaps I don't have the latest version though. Are you saying that it is the software that is causing the speed difference and it has nothing to do with the encryption on the disc? I'm not saying I'm not wrong. I probably am. I'm just trying to figure out where the obvious speed difference is coming from. Anytime I have done an encrypted disc vs. an unencrypted disc, I have noticed an obvious speed difference. Can you let me know what is causing this, Alex? Thanks!

alexnoe
17th October 2002, 21:31
Some drives limit the speed by firmware, such as Toshiba 1502 (2x CLV) and 1612 (2x-5x CAV). You would need a hacked firmware to "fix" this.
Other drives, such as some Pioneers, do not limit the speed for CSS discs and read them as fast as normal discs, which is nice for ripping, but annoying when watching a DVD. Sounds like a helicopter :(

SmartRipper 2.41 seems to need less than one second to get the decryption code here, older versions sometimes need half a minute. Either 2.41 can grab the code from the disc, or the algorithm to extract it from the files has been improved. Finding the decryption code should not be a cause for lower speeds.

The decryption itself doesn't take much CPU power. Current CPUs would be easily able to do that at 16x speed.
However, with crappy chipset drivers, it can occur that the DVD-ROM drives runs at multiword DMA only, which has a throughput of 16 MB/s theoretically (practically about 12 MB/s), so that this would limit the transfer rate to about 9x.