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- Newsgroups: comp.sys.next.misc
- Path: 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
- Lines: 27
-
- 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
-