Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!spool.mu.edu!agate!stanford.edu!unix!ctnews!pyramid!nsc!amdahl!JUTS!duts!kls30 From: kls30@duts.ccc.amdahl.com (Kent L Shephard) Newsgroups: comp.sys.amiga.advocacy Subject: Re: The Amiga's Future Message-ID: Date: 20 Jun 91 16:17:21 GMT References: <1991Jun18.104100.12869@marlin.jcu.edu.au> <1991Jun18.131000.29178@news.iastate.edu> <66@ryptyde.UUCP> <1991Jun19.073024.3841@mintaka.lcs.mit.edu> Sender: netnews@ccc.amdahl.com Reply-To: kls30@DUTS.ccc.amdahl.com (PUT YOUR NAME HERE) Organization: Amdahl Corporation, Sunnyvale CA Lines: 50 In article <1991Jun19.073024.3841@mintaka.lcs.mit.edu> rjc@wookumz.gnu.ai.mit.edu (Ray Cromwell) writes: >In article <66@ryptyde.UUCP> dant@ryptyde.UUCP (Daniel Tracy) writes: >>Responding to the following: >> >>"It is also no secret anymore that Commodore is going to fully adopt >>the MPEG standard for full-motion video, so where does this fit in? Do >>you think Commodore is going to build MPEG decompression capabilities >>into the chipset, or will they merely include an MPEG chip with Amiga >>systems? (Just as good, but somewhat less exciting)" >> >>Well it's too late for Commodore to become the first. The Macintosh OS is >>the first to have JPEG and MPEG compression/decompression built in (in the >>File Manager level, so present applications work with it). :-) Well the Mac wasn't first. MPEG is just being standardized. Not in the Mac OS, JPEG may be in the OS. The NeXT has had support for JPEG since the introduction of 2.0 of the OS. I've been doing JPEG decompression/compression for a couple of months on my NeXT. You can trade of quality for amount of compression when you process images. Decompression is done on the fly when you tell an application to open an image. It isn't real time but it works very well. So the NeXT not the Mac was first with JPEG. > > I doubt it has MPEG built in, maybe JPEG, but certainly not >"reeal-time decompressing JPEG" Even with a Mac IIfx it wouldn't >be real time, so it's not much use for anims (e.g. Quicktime) ~~~~~~~~ So true. On a NeXT with lots of memory and DMA it isn't real time. >Of course, Apple could always brain-damage the JPEG algorithm and >trade off compression ratio for decompression speed, but at this point, >delta compression starts to look goo. On a NeXT you can do the trade off yourself. If you want a high quality image when you decompress you choose a lower compression factor. > > >-- >/ INET:rjc@gnu.ai.mit.edu * // The opinions expressed here do not \ >| INET:r_cromwe@upr2.clu.net | \X/ in any way reflect the views of my self.| >\ UUCP:uunet!tnc!m0023 * / -- /* -The opinions expressed are my own, not my employers. */ /* For I can only express my own opinions. */ /* */ /* Kent L. Shephard : email - kls30@DUTS.ccc.amdahl.com */