Changes between Version 21 and Version 22 of WindowRefresh

Timestamp:

06/21/13 16:15:36 (9 years ago)

Author:

Antoine Martin

Comment:

--

WindowRefresh

@@ -1 +1 @@
 = Window Refresh =
 
-The key feature of xpra is the forwarding of individual window contents to the client. This is achieved using the X11 Composite extension, xpra is a compositing window manager that just happens to display the window contents remotely.
+The key feature of xpra is the forwarding of individual window contents to the client. This is achieved using the [http://www.x.org/releases/X11R7.6/doc/compositeproto/compositeproto.txt X11 Composite extension] and for the windows and servers that support it with the [http://www.x.org/releases/current/doc/xextproto/shm.html MIT-SHM extension], xpra is a compositing window manager that just happens to display the window contents remotely.
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 The speed at which the server compresses and sends screen updates to the client depends on a number of factors, the most important one is obviously the [/wiki/Encodings encoding used], but as can be seen below the [/wiki/ClientRendering client rendering] also has an influence.
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-There are only a few things the system can tune at runtime:
+There are only a few things the system can tune at runtime, each is explained in more details below:
 * the "batch delay": this is the time that the server will wait for screen updates to accumulate before grabbing the next frame
-* the "video quality" (for the x264 video encoder only)
-* the "video speed" (for the x264 video encoder only)
+* the "video quality": mainly for the x264 video encoder, but also jpeg and webp
+* the "video speed": mainly for the x264 video encoder, but also used for png/jpeg (at very low speed, we "optimize" the compression)
 
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