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DVD backup

Posted on 2003-03-19
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Last Modified: 2010-04-14
Can I make a backup of a DVD movie using my iMAC? Can't I just copy the files of the DVD movie onto my deskto or folder and then burn those files onto a blank DVD??? Would the DVD play in my DVD player?
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Question by:Sith_Lord
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6 Comments
 
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Expert Comment

by:weed
ID: 8171539
Nope. DVD movie discs have two layers and thus contain more data. Typically 9 GB. DVD-R discs are single layer (you just cant burn to both layers yet) so only contain about 4.5gb. Just cant fit 9gb on a 4.5gb disc.

Now, say you have a VERY short movie on a DVD. You cant just copy the files across because of encryption, and because of the way DVDs are created. You CAN do it if you extract the entire video to MPEG with an audio stream, then drop it on iDVD. However you have to decrpyt it, when you translate to MPEG, and extract the audio.
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Author Comment

by:Sith_Lord
ID: 8173706
Audio? I'm talking about Video. The actual movie. And I've seen DVD-R's that are now 9gb.
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Expert Comment

by:weed
ID: 8175137
Movies have two components. A video stream, and an audio stream. Unless youre talking about backing up old silent films.

9GB DVD-Rs are double sided, NOT double layered. They're just like having two 4.5gb discs slapped together back to back. You actually have to eject them, flip them over, and do another burn.
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Author Comment

by:Sith_Lord
ID: 8180139
So bottom line Weed...making a copy of a movie to a blank DVD is NOT going to work out???
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Author Comment

by:Sith_Lord
ID: 8180140
How about copying a DVD movie to my computer?? Will this work??
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Accepted Solution

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weed earned 100 total points
ID: 8182269
Right. Making an exact duplicate of a DVD isnt going to work just because of the size limits on a DVD-R disc. To copy a DVD to your HD you could use DVD Backup which is on versiontracker.
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