DVDShrink performance problem

[wimclend]

greetings all,

quick question about something i've noticed on DVDShrink

i'm using DVDShrink to backup some movies--and after a fresh reboot, the first one will analyze at 4+ Mb/s, and encode it at 8-10+ Mb/s

the second one will analyze at ~2Mb/s, and encode at 3-5 Mb/s

any idea why this is?

no compression is being done on any of them, as they are already compressed to the appropriate size

Thanks,

wimclend

[Lazza]

Don't know the answer tbh but as a rule I always reboot in between encodes/transcodes whether using Shrink or CCE/DVD-RB myself so maybe why I never notice a difference in speeds. Clear the memory etc, etc and full steam ahead. :)

[dannyv]

Originally posted by wimclend

i'm using DVDShrink to backup some movies--and after a fresh reboot, the first one will analyze at 4+ Mb/s, and encode it at 8-10+ Mb/s
wimclend

Why would you use shrink to backup a movie thats already compressed. All you should need to do is burn it in somthing like nero.

Also which analyze are you refering to the first analyze when you first load the dvd/file or the deep analyze. If your refering to the deep analye then the movie is not compressed and shrink is analying the rate of compression. If this is the case the speed will never be constant when compressing because it depends on the complexity and the amount of compression each movie requires.

@LAZZA

Rebooting after each encode is rediclous. If you have to reboot after each encode using eather shrink or CCE then you better look closly at your software or hardware configuration because something is very wrong.

[wimclend]

i'm making a 2nd copy of a backed up movie for my roommate

its during the first analyze where its loading the dvd, not the deep analyze

system specs are

P4 2.8 ghz w/ HT
1 gig of ram
NEC ND-3500A 16x DVD burner


programs i'm using to burn are DVDShrink 3.2 and Nero 6.6.0.1 (I believe) and i burn them through DVDShrink


any other incite greatly appreciated!

[dragongodz]

its a commen known fact that different dvds rip at different speeds. look in the decryping section of the forum and you will find examples of people asking about it.

try ripping the same dvd(deleting the dvdshrink info saved so it reanalyses the dvd) and see if there is much difference in speed.

[dannyv]

Originally posted by wimclend
i'm making a 2nd copy of a backed up movie for my roommate


You do not need to use shrink at all. You just need to use nero. Also remember that a dvd-r disk is very different then an original studio manufactured dvd. A studio dvd will rip and copy much faster then a dvd-r. Most dvd-r's can only be read at about 2.4x speed, where as an original can be read 10x or faster. TO prove this you can rip a studio dvd in dvd decrypter then rip the same copy. You will see the copy takes up to 5 times longer to rip. These speeds are based on ripping in a 16x dvd-rom drive. Most burners are even slower.

[ukb007]

Hi dannyv.

Can you tell me why this difference in read speeds between factory-made and Home-made DVDs?

Regards.

[dannyv]

Originally posted by ukb007
Hi dannyv.

Can you tell me why this difference in read speeds between factory-made and Home-made DVDs?

Regards.

Technically no I can't, But it is some sort of spec of the manufactures. Maybe someone can give a more detailed answer.

[blutach]

One thing I have noticed is that DVD Shrink sometimes exhibits a lot of page faults, particlularly during analysis, which slows it down considerably.

This may be one reason to reboot (although I haven't don't so yet) between analyses.

Maybe Mr Bass, ddlooping or even Shrink himself can comment?

Regards