Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!uniwa!cc.curtin.edu.au!cutmcvax!amuser From: amuser@cutmcvax.cs.curtin.edu.au (Bill Sharp-Smith AUG) Newsgroups: comp.sys.amiga.multimedia Subject: Re: CDTV Motion Video Message-ID: Date: 21 Jun 91 04:39:11 GMT References: <1991Jun18.144308.19783@en.ecn.purdue.edu> Sender: news@cutmcvax.cs.curtin.edu.au (Usenet News System) Organization: Curtin University of Technology, Computing Science Lines: 33 Nntp-Posting-Host: cutmcvax.cs.curtin.edu.au wwarner@en.ecn.purdue.edu (Art Warner) writes: >I am SORRY, but I don't consider a 160x120 pixel window running at one fps to be >"true" realtime decompression of "VIDEO MOTION". I don't care how many bits of >color is in that tiny window. >SORRY MacFans. (not real sorry though!) I've seen a video demonstrating QuickTime, and the frame rate didn't seem any less than television, and I think it was in 24 bits. I've also seen a real live IIfx with a 24-bit video card playing live video from a video disk in 24-bit colour. The frame rate was again, close to TV in a window about half the screen size. I know it was not (necessarily) being compressed/decompressed as it was coming from the video disk, but how else do you get live video on a Mac screen ? It must have been at least digitized, then re-displayed. You can't just do a video-overlay like the Amiga. It was interesting though, that the frame rate slowed down considerably when any kind of mirroring or colour adjustments were made (on the fly). Also I was told that the fram rate would increase if a JPEG (MPEG) chip was inserted. Also, regarding QuickTime, I think one of its major concepts is that video and pictures are just another data-type. So you can 'copy' a section of compressed video from one program, paste it into your word-processor, find the frame you want (using VCR-style controls) and then print that frame as a picture in your document. Regards, Amiga Users Group of Western Australia