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Politics : Formerly About Applied Materials -- Ignore unavailable to you. Want to Upgrade?

To: Robert O who wrote (62155)	3/18/2002 10:18:42 AM
From: runes	Read Replies (2) \| Respond to of 70976

Robert O. - 5 GByte = std DVD ROM, 700 MByte = CD What you are missing is that DVD movies are encoded in MPEG2 format (about 10:1 compression) while your digital vidi cam is probably unloading video in .avi format (uncompressed). Makes a BIG difference. As for compression improvements - MPEG4 is on the scene and slowly getting attention. It was used for thew DIVX pay-as-you-go flop a few years back. I don't have good numbers on it but my impression is that it only increases compression by 20% or so. ...Beyond that - I don't hold out much hope for a major breakthrough in compression technology. The MPEG technology is quite impressive as it covers spatial, temporal, and color compression. And, of course, audio compression. I'm can't think of anything else left to compress down! ...As for the vidi cam - the next major improvement will be having real time encoding. But this will have to be layered on top of improving steady cam technology (jiggly pictures are a compression nightmare!). Bottom line is that this will add 30 - 50% to the camera cost so don't expect the technology to burst on the scene - it will work in from the high end.