Download and install youtube-dl
,enable the 'Always on top' plugin in totem, also hide the controls using 'Show Controls' under the 'View' menu, then run:
youtube-dl http://www.youtube.com/watch?v=gGG_GHYzSLs
totem 'Town Hall Hangout-gGG_GHYzSLs.mp4'
Or, with VLC
youtube-dl http://www.youtube.com/watch?v=gGG_GHYzSLs
vlc --video-on-top --qt-minimal-view 'Town Hall Hangout-gGG_GHYzSLs.mp4
You can also do the transparency in compizconfig-settings-manager
:
There is also apparently a Ghost plugin that used to be available to enable click-through, but I think on recent versions of Ubuntu some things like that have been removed - see here.
always on top
but about transparency I am not sure. For transparency you can use ccsm `opacity Brightness & Saturation’ Plugin.