Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!spool.mu.edu!snorkelwacker.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!captkidd From: captkidd@athena.mit.edu (Ivan Cavero Belaunde) Newsgroups: comp.sys.mac.programmer Subject: Re: QuickTime (tm) ! Message-ID: <1991Jun6.191929.14421@athena.mit.edu> Date: 6 Jun 91 19:19:29 GMT References: Sender: news@athena.mit.edu (News system) Distribution: comp Organization: Massachusetts Institute of Technology Lines: 36 In article d88-jwa@byse.nada.kth.se (Jon W{tte) writes: >We've had the possibility to discuss it for three days, and noone >has said a word! Hey, give us a break, we're sorta too busy using it to discuss it at length... ;-) Seriously, though, there's a *lot* of stuff in there. Really slick architecture, guys. The big thumbs up. >Of course, on the morning of June, 3, I had a >bunch of drooling Windows idiots over to hit them on the head with >24bit movies from disk :-) Nitpick, nitpick... The AVC (Apple Video Compressor) effectively does only 16 bits. The RLE codec is screen-depth dependent though. Somehow I doubt you demoed the RLE movies (animation at 160x120 ain't really dazzling. Video *is*)... >Anyone done a MPEG video compressor for QT yet ? (Real-time ? :-) MPEG? What's the point? You can't really write real-time DCT-based algorithms on a 16MHz 020/030, and why would you write MPEG if it can't be real time (since it is for moving images after all)? (well, maybe if you're willing to settle for really small images...). Besides, the AVC is pretty good for motion and Apple's JPEG gets the job done for stills. Now if someone wants to throw hardware at it, a nice fast DSP or RISC chip might help. Hopefully Apple will rewrite and rerelease their 8*24GC-based AVC or another one which uses the 29K on the card (although I think MPEG is probably still not viable even then - you'd need better hardware like the C-Cubed chipset). -Ivan Cavero Belaunde Visualist Digital Video Applications (DiVA) Corp. Internet: captkidd@ATHENA.MIT.EDU Disclaimer: Opinions are like ani. Everybody has one.