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DVD Capacities

Posted on 2004-04-13
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Last Modified: 2010-04-03
Why is it that some production DVD's, like the ones you rent or buy fom Blockbuster, have a capacity upwards of 7GB?  DVD+R can't even do that unless you write both sides.
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Question by:Brian Coughter
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Callandor earned 250 total points
ID: 10816031
They're called "dual-layer" dvds, effectively twice the capacity of single-sided, single-layer dvds, which are 4.3GB.  In June or thereabouts, dual-layer dvd writers will hit the market, but the media is still very expensive.
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by:Brian Coughter
ID: 10816037
They wrie on one side of the disc?
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by:Callandor
ID: 10816611
Yes, one side of the disc.
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