Eight Gigabytes Of Stuff On One DVD

In the next few weeks, expect to be able to buy DVD discs that can store up 16 hours of video or 8.5 GB of Data. Verbatim said yesterday they would this spring release “the industry’s first Double-Layer DVD+R (DVD+R DL) discs”, nearly doubling the storage capacity on DVD recordable discs (from 4.7GB to 8.5GB) on a single side. Verbatim says these discs will be compatible with existing DVD video players and DVD-ROM drives.

That ’16 hours’ bit needs some clarifying: in fact, you could only store up to 4 hours of DVD-quality video — the 16 hours refers to VHS video quality. The way Verbatim say they do this is to have the first recording layer semi-transparent with enough reflectivity for writing/reading data on the first layer, yet transmitting enough laser power to read/write on the second layer by refocusing the laser.

Verbatim expect content developers (read DVD movies, big software packages) to make use of this technology: You could fit two Hollywood movies on one of these discs, if you really wanted to. Is this the time when I can talk about how I remember how all you could get on a floppy drive was less than one megabyte, but how somehow we were happier then? (No – Ed.)

08. January 2004 by jeremy
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