The problem occures in Bs player, DivX player and in Win Media player too.
The work of projector is controlled by ATI Catalyst and the example video that is shown in it is visible on the screen.
The projector is in dual mode with my desktop and it shows everything as except vids. Win Media Player visualisations are visible on the screen. I reseted projector to its defaults so the problem is probably not in it.
Plz help!