Perhaps, continuing the off-topic thread... The best compression techniques that do not use block-based methods (as in MPEG-2/4) can achieve much better compression capabilities than listed below and in the other follow-on thread. For an excellent overview of what this may do for video on demand over the Internet, check out the September 22nd issue of The Economist. There are basically three types of approaches: wavelet, fractal, and heuristic (or object?). They are also either software-only or hardware-assisted. I've seen one of them that claims 1.1 Mbps typically for standard definition (480i), and about 3 Mbps for HDTV (1080i). I'm no codec expert, but I was amazed at the clarity, even with packet loss. I think we'll find video on demand and other streaming entertainment services over our xDSL connections and Cable Modems much sooner than most people expect. I hope network operators are prepared for it. You can get a typed copy of The Economist Article at: http://fox.rollins.edu/~tlairson/ecom/video.html Regards, Jeff Turner jlt@interstream.org
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Al Rowland Sent: Wednesday, January 22, 2003 9:28 AM To: nanog@trapdoor.merit.edu Subject: RE: FW: Re: Is there a line of defense against Distributed Reflective attacks?
Not to mention that fact that 99.99% of current consumer connections are not up to the task. Standard full-screen video digital stream is ~6Mbps, HDTV requires 19.4Mbps. Don't know many consumers with T3s. ;)
Al Rowland