I not sure if I'm asking right. I want to back up my dvd's using the dvd shrink what percentage should I use so I can compress the file to save hard drive space.

depends

Please be more specific as to

1)explain clearly and exactly what are your objectives
full disc
movie only
best quality
save as much space on hdd
do you wish to burn to disc
any other thoughts

What I"m trying to do is burn 3 movies on one disc using dvd shrink to compress the file.

Please be more specific, otherwise we here are of little help to you

for example I'm trying to burn xmen 1,2,3 to one disc just the main movie but everytime I try to do it in nero it keeps giving me an error message

in theory it is doable, but picture quality is gonna suck big time.
Is this what you want?

thats fine if I can do 2 with good quality thats even great but when i try to burn it to nero it's keeps given and error message.

In a nutschell this is what u r trying to do

1) each file typically (uncompressed movie only) is about 5-6 Gbs
2) a single layer dvd has about 4.3 Gb or recordable space
3) even if you get only 2 movies onto 1 disc, you need to compress 10-12 Gbs of data to 4.3 Gb. A compression ratio of 27.9-43%
THIS MEANS YOUR MOVIE ARE GONNA SUCK BIG TIME WHEN YOU WATCH THEM
5) Am I clear ?
6) As stated previously, Is this what you want ????


BTW the reason you get the Nero error message is that you cannot fit that much data onto a recordable disc. This akin to saying "You can't get a quart of water into a pint sized jug."

Originally posted by gemvir911:

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thats fine if I can do 2 with good quality thats even great

Quote:

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but when i try to burn it to nero it's keeps given and error message

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.

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Are the movies decrypted onto the HDD or are u just trying to copy on the fly disc to disc via Nero ?

Father iluvendo is right on here.

If you put multiple movies on one SL disc, the quality will be terrible.

@ Cardinal 7thsinger, I think the OP left us.

Yep, the OP left us.

No OP on 5/10

You talk about using DVDShrink to put more than one movie on a DVD, do you do that by using the "re-Author" option by opening up the 2 movies and "pull" them over to the window on the left like you do when you want to eliminate the menus? WHAT format does the movies have to be in? VOB?

Originally posted by jagman55:

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You talk about using DVDShrink to put more than one movie on a DVD, do you do that by using the "re-Author" option by opening up the 2 movies and "pull" them over to the window on the left like you do when you want to eliminate the menus? WHAT format does the movies have to be in? VOB?

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Yes.
Otherwise DVD Shrink will not recognize them.