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Technology Stocks : C-Cube

CUBE 37.08

+0.4%

Dec 2 3:59 PM EST

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To: BillyG who wrote (37260)	11/16/1998 1:55:00 PM
From: DiViT	Read Replies (3) of 50808

Ligos reatime encoding software... From the Ligos site: ligos.com Video Output: MPEG-1 and MPEG-2 video element streams. MPEG-1 supports for constrained or unconstrained parameters. MPEG-2 support for Main Profile @ Main Level, High Profile @ High Level, High Profile @ High 1440 Level. But it is only realtime for a very small subset... Tests of the GoMotion codec with current MMX technology have demonstrated real-time performance at SIF (352x240) resolution on a 400 MHz Pentium® II processor platform MPEG-2 MP@ML resolution is 720x480 @30 fps. GoMotion makes no claims to Frame rate nor do they say if they support IP & B frames. At least I haven't seen it yet. From THE MPEG faq: bmrc.berkeley.edu What are Profiles and Levels? A. MPEG-2 Video Main Profile and Main Level is analogous to MPEG-1's CPB, with sampling limits at CCIR 601 parameters (720x480x30 Hz or 720x576x24 Hz). "Profiles" limit syntax (i.e. algorithms), whereas "Levels" limit coding parameters (sample rates, frame dimensions, coded bitrates, etc.). Together, Video Main Profile and Main Level (abbreviated as MP@ML) normalize complexity within feasible limits of 1994 VLSI technology (0.5 micron), yet still meet the needs of the majority of applications. MP@ML is the conformance point for most cable and satellite TV systems.

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