MPEG 1 : So where's the market? Next year we will probably get a 3DO machine (possiblybased on the PowerPC) that will be in the 486/Pentium class. With thisalgorithm we should have video that *surpasses* MPEG-1 in software only.Since we have to purchase a separate CD to watch things like ShockWaveanyway, why fork out $200 for the MPEG cartridge and then buy separateMPEG games that will be much more difficult to resell when you want to.IMHO MPEG-1 is too little, too late. The only market I can see would be forinteractive porno during 1995 and part of 1996 (although this market may belarger than anyone realizes).Well, MPEG-2 will be ready later this year (or early next...). It gives you 4 times more data on a disc (a WHOLE movie on one disc) better-than-laserdisc-quality and (ofcourse) needs a special CD-player..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Stefan Gimeson UNet: | Let's build a nightmare-nation Tunavagen 39 B660 | learn and work as never yet ! S-223 63 Lund Voice:(0)46-394280 | L I F E Sweden (XTCIZNRG4U) EC in '94 ! Vote YES!! | *the ultimate VR experience*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MPEG 1 : MPEG-2 does not give you more data, it REQUIRES much more data at amuch higher rate than MPEG-1 (for the high quality modes). NormalCD-ROMs cannot store MPEG-2 movies.MPEG-2 is still a lossy compression scheme. It is NOT higher qualitythan laserdisc.You are confusing high density CD technologies with video compressiontechnologies (or the magazine article you refer to does).--Stephen H. Landrum voice: (415) 261-2626 email: The 3DO Company 600 Galveston Drive, Redwood City, CA 940633DO New Developer Info: (415) 261-3202 Product Info: (415) 261-3454Stephen, you'd better qualify this statement or you'll be losing a lot ofcredibility. MPEG-2 certainly *can* provide a higher picture quality thanlaserdisc. It is the compression scheme that will be used in HDTV whichis MUCH better quality than current laserdiscs. Perhaps you meant thatMPEG-2 AT THE SAME DATARATE AS MPEG-1 does not provide higher picturequality? MPEG 1 : I believe MPEG-2 is a scalable compression scheme. I'm not sure that MPEG-1is. By the way, is MPEG-1 320x240 or 352x240? I saw a company doing MPEG-1encoding that claimed the latter resolution. I thought I remember readingan article (in EE Times again) that explained how MPEG-1 was encoded andI believe it said it was 320x240 resolution.Excerpts from the MPEG-2 FAQ by Chad Fogg of the MPEG committee:Q. Can MPEG-1 encode higher sample rates than 352 x 240 x 30 Hz ?A. Yes. The MPEG-1 syntax permits sampling dimensions as high as 4095 x 4095 x 60 frames per second. The MPEG most people think of as "MPEG-1" is actually a kind of subset known as Constrained Parameters bitstream (CPB).A. CPB are a limited set of sampling and bitrate parameters designed to normalize computational complexity, buffer size, and memory bandwidth while still addressing the widest possible range of applications. CPB limits video to 396 macroblocks (101,376 pixels) per frame if the frame rate is less than or equal to 25 fps (frames per second), and 330 macroblocks (84,480 pixels) per frame if the frame rate is less or equal to 30 fps. Therefore, MPEG video is typically coded at SIF dimensions (352 x 240 x 30fps or 352 x 288 x 25 fps). MPEG 1 : The total maximum sampling rate is 3.8 Ms/s (million samples/sec) including chroma, but not including any blanking intervals. The coded video rate is limited to 1.862 Mbit/sec. In industrial practice, the bitrate is the most often waived parameter of CPB, with rates as high as 6 Mbit/sec in use. A reasonable encoder should reach quality saturation at about 2 Mbit/sec though.A. It is an optimum point that allows (just barely) cost effective VLSI implementations in 1992 technology (0.8 microns). It also implies a nominal guarantee of interoperability for decoders and encoders. MPEG devices which are not capable of meeting SIF rates are not canonically considered to be true MPEG.A. MPEG-1 was optimized for CD-ROM or applications at about 1.5 Mbit/sec. Video was strictly non-interlaced (i.e. progressive). The international cooperation executed well for MPEG-1, that the committee began to address applications at broadcast TV sample rates using the CCIR 601 recommendation (720 samples/line by 480 lines per frame by 30 MPEG 1 : I assume that by saying "In theory" you meant that the analog system hadinfinite bandwidth. If so then why don't we say that the digital system isusing an infinite sampling rate? In other words, you have qualitylimitations with both formats, but one standard may have lesser qualitylimitations than another. My point is that digital storage is notnecessarily of lesser quality than the analog version, and in fact willout perform the analog version if the represented bandwidths are equal.To address the original statement, since the effective bandwidth of theMPEG-2 HDTV format is greater than analog laserdisc (ignoring compressionartifacts) than the MPEG-2 system wins easily. Once you factor incompression artifacts the MPEG-2 system degrades, but not even close to thelevel of laserdisc. Next time you're at NAB check out the HDTV displaysand you'll agree.
| ||
|
avi player download, avi's, free gay mpeg, avi format, divx encoder, divx 5.0, divx vcd, mpg converter, mpg download, xxx mpeg, divx digest, divx fix, flask mpeg, converting avi, xing mpeg player, avi viewer, divx codex, divx decoder, divx to svcd, mpg player, divx 3.11, divx com, divx ac3, divx mpeg, playing avi, www divx com, divx porn, nero mpeg 2, xing mpeg, xxx mpg, nero mpeg, sex mpg, convert divx, divx 5.02, divx windows, hardcore mpeg, mpeg layer, panasonic mpeg, sex avi, divx 4, divx alpha, global divx, www divx, lsx mpeg, easy divx, mpeg 2 svcd, mpg joiner, divx 5.03, mpg codec, divx 4.12, 2 avi, avi divx, avi download, avi free, avi mpeg, avi mpg, avi to mpeg, avi to mpg, avi video, codec avi, divx codec, divx download, divx linux, divx player, dvd divx, dvd to avi, free divx, free mpeg, free mpg, mac divx, movies mpeg, mpeg download, mpeg movie, mpeg porn, mpeg sex, player avi, subtitles divx, video mpeg |