@scire
Do you have nVidia GPU?
If you have, go for this:
Open nVidia Control Panel. Under "manage 3D settings", click on program settings. Click Add, goto Program Files(or whatever it is called on Win 7)/VideoLAN/VLC/ and pick VLC.exe
There should be vlc.exe under select program to customize under nV CP. Scroll down and set Vertical Sync to Force ON.
Then under VLC player settings, under Tools/Preferences/Video select output module to DirecX 3D video output.
You will have no more screen tearing.
That applies to all Players, and only on nV GPU.
Only if I could figure out how to do that with embeded flash on Youtube.......