These are the encodings used by VNC to send screen update data to the client.
> Raw The Raw encoding sends every individual pixel. It uses the most bandwidth of any encoding but is also very simple to implement. > RRE The Rise-and-Run-Length-Encoding is a simple compression algorithm which takes advantage of regions of like color in updated rectangles. > CoRRE Compact RRE encoding. It is slightly more efficient than RRE by optimizing the size of update rectangles. > Hextile This is AT&T's preferred encoding. It is lighter on the wire than the rest of the encodings in your list, but nowhere near as light as zlib or tight. It carves up each rectangle into subrectangles of a constant size and then uses RRE or Raw (whichever is more efficient for the particular subrectangle) to encode each one. > Allow CopyRect encoding This encoding copies the contents of one rectangle on the viewer's screen to another rectangle. It is the fastest and most efficient encoding, but it often goes unused (because there aren't duplicate rectangles available to copy from). I can't think of a reason other than testing why you would ever want to disable it. I guess neither tight nor zlib encoding are available in the AT&T release of VNC. I recommend checking out TightVNC, which is a complete VNC distribution and also the home of tight encoding: http://www.tightvnc.com/ Tight and zlib use highly compressed (but lossless) screen updates. They use much less bandwidth at the cost of higher CPU load on both the client and server. They also may introduce a little bit of extra latency. For this reason, I recommend hextile encoding wherever bandwidth is plentiful and tight encoding where it is not. TightVNC has some other great features such as local cursor handling (much more responsive and efficient), optional lossy JPEG encoding, and much more. -- Mike Ossmann, Tarantella/UNIX Engineer/Instructor Alternative Technology, Inc. http://www.alttech.com/ --------------------------------------------------------------------- To unsubscribe, mail [EMAIL PROTECTED] with the line: 'unsubscribe vnc-list' in the message BODY See also: http://www.uk.research.att.com/vnc/intouch.html ---------------------------------------------------------------------
