Στις 26/03/2012 10:05 πμ, ο/η Alkis Georgopoulos έγραψε: > By default, X_COLOR_DEPTH is 32 for thin clients, which means that a > 320x240 youtube video needs 73.728.000 bps bandwidth (30 fps, 32 bpp). > > Setting X_COLOR_DEPTH=16 for thin clients makes that video need exactly > half the bandwidth, i.e. 36.864.000 bps. >
Sorry, calculations were based on the original video size and not on the flash player applet size, which is what matters. Here are some more accurate results, based on the usual 640x350x30fps youtube flash applet: X_COLOR_DEPTH=32: Bandwidth=640x350x30x32=215.040.000, i.e. up to 4 clients on gigabit X_COLOR_DEPTH=16 Bandwidth=640x350x30x16=107.520.000, i.e. up to 9 clients on gigabit Flash replacer plugin which uses XVideo which always uses 12bpp and depends on the original video size instead of the applet size (https://addons.mozilla.org/el/firefox/addon/161869/): Bandwidth=320x240x30x12=27.648.000, i.e. up to 36 clients on gigabit XVideo playback needs the same bandwidth on fullscreen videos too, but of course on bigger original video resolutions that quickly increases. Unfortunately those plugins have other problems and don't always work. Let's hope browsers support XVideo as an HTML5 video playback option. :) ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
