rsc "at" vingmed.no
Fri, 27 Feb 1998 08:39:53 +0000
I suggest going one better, using some proper compression technique,
like gzip or PNG, instead of proprietary techniques like that. VNC was
virtually useless over a modem, as dithered parts of the screen came
across one pixel at a time.
I dumped a 1600x1200 24-bit uncompressed BMP of my typical desktop
(mostly windows with text and some icons). The BMP was 5.5 MB. Next, I
zipped it with maximum compression, and the resulting ZIP file was 82
KB. And that's *24-bit*.
Dr. Joel M. Hoffman wrote:
> Having looked a bit further at vnc over the Internet and a slow modem,
> first I want to publicly state that I'm very impressed. VNC makes
> very good use of bandwidth. I have a suggestion for improvement.
> Many screen backgrounds consist of repeated patterns, and while VNC is
> great at sending solid backgrounds in a jiffy, the patterned
> backgrounds take longer. In general it's pretty hard to figure out
> what repeats in the background, and then code it properly so as to
> make it as efficient as solid colors, but I wonder if cheating a bit
> wouldn't help. Why not look at the current background pattern as
> listed in the registry, and then send that as repeated?
> (Screen savers are the other big waste of bandwidth....)
> (joel "at" exc.com)
Robert Schmidt <rsc "at" vingmed.no>
Software Developer / Vingmed Sound tel +47 67124237 fax +47 67124355
Private tel +47 22606076 WWW http://www.nvg.unit.no/~rsc
jeg lukker et oye og ser halvt
jeg lukker begge og ser alt -- seigmen