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Article #4043

Re: Interest in Full Motion video, without hardware.

#4043
From: Mark Thomsen
Date: Tue, 24 Nov 1992 03:18
27 lines
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nevin@dtint.dtint.com writes
> Full size 640 X 480 frames, at 30 frames a second?  Can it be done?

Not unless somebody found something undocumented. That's 10 mega-pickles per  
second, or 30 mega-bytes per second. On this hardware going through the  
Postscript stuff? Yeah, right. NeXTdimension limits performance through the  
NeXTbus (unless you can fit the stuff in ND memory, but it still doesn't keep  
up). The other systems just don't seem to paint the screen fast enough for  
psuedovideo like this.

> Anything smaller than 640 X 480 (which is only barely acceptable for some  
> minor-league publishing purposes), and I lose interest.
> 
> Anything slower than 8 frames a second, and I lose interest.

On a 25 MHz NeXTstation Color, running V2.1, I get 5+ frames per second for  
640x480 --- if the frames are in memory (no disk activity delays). I suspect  
that with V3.0 on a 33 MHz NSTC it would be possible to do 8 fps for 640x480  
sequences. Short ones.

I have a goal of 15 fps - animation film rate - for such frame size. When I can  
get back to it. And synchronized sound, and then off of disk for really long  
sequences, and ...

"To dream ..."

Mark R. Thomsen
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References: <1992Nov23.010622.2703@dtint.uucp>

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Path: arc1-ca.pugleaf.net!sparky!uunet!usc!venice!gumby.dsd.trw.com!deneva!news
From: thomsen@spf.trw.com (Mark Thomsen)
Subject: Re: Interest in Full Motion video, without hardware.
Message-ID: <2B119EFF.9AF@deneva.sdd.trw.com>
Sender: news@deneva.sdd.trw.com
Organization: TRW Inc., Redondo Beach, CA
References: <1992Nov23.010622.2703@dtint.uucp>
Date: Tue, 24 Nov 92 03:18:22 GMT
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