Newsgroups: comp.sys.amiga.multimedia
Path: utzoo!utgpu!watserv1!tcapener
From: tcapener@watserv1.waterloo.edu (CAPENER TD - ENGLISH )
Subject: Re: CDTV Motion Video
Message-ID: <1991Jun7.025704.21505@watserv1.waterloo.edu>
Organization: University of Waterloo
References: <30764@hydra.gatech.EDU>
Date: Fri, 7 Jun 1991 02:57:04 GMT
Lines: 34

In article <30764@hydra.gatech.EDU>, jt34@prism.gatech.EDU (THOMPSON,JOHN C) writes:
> Does CDTV support full motion video? I was wondering if anyone knows of any
> hard data supporting the need for full motion video vs. still pictures. Has
> full motion video been proven to substantially enhance learning in 
> education with multimedia systems?
> -- 
> THOMPSON,JOHN C
> Georgia Institute of Technology, Atlanta Georgia, 30332
> uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!jt34
> Internet: jt34@prism.gatech.edu

I saw a CDTV demo doing full-motion video.  The CDTV can do full-motion
video in a third-of-a-screen sized window.  The video a series of HAM frames
stored in compressed format on the CD.  The C= rep said the CDTV could put
72 minutes of this video on one CD.  I'm also an Apple multimedia developer
and as of February, Apple was putting 24 minutes of video on a CD.

The video, while full-motion, did not run at 30 frames per second.  It was
more like 15.  It still looked really good.

Actually, to be fair (fair?  who said we had to be fair?)  Apple's 24 minutes
of video is full screen and at 30 frames per second.  Still, Apple's video
requires a multiple-thousands-of-dollars video board while Commodore's video
works on a stock CDTV.  I'm not making a value-judgement here, just telling
what I know.

The C= rep said that right now decompression is done in software because
the standard for compressed video in hardware has not yet been finalized.
When it is, he said that C= will incorporate it.

I was really impressed, anyway.  Not bad for a $1100 piece of equipment.

Travis Capener