In order for me to watch HD videos without tearing, I need to disable my Composite setting in xorg.conf
Section "Extensions" Option "Composite" "Disable" EndSection But I love my transparency, so, how do I enable and disable it without restarting X? (Preferably using command line)

xorg.confsnippet the extension name should be spelledCOMPOSITEto work on recent Xorgs.