Black movie screens
 

Since I work with this software - and I want to watch a video - the video screen becomes black. I can hear the sound - if I want to scroll forward, I can see the single scenes. But I cannot see the movie itself. This belongs to Google Chrome, Safari fire folks and all the brothers I have. Does someone has an idea how to solve this problem?

Depending on your setup, it is likely that Screen Sharing has triggered the anti-piracy policy in Mac OS and won't let you display copyrighted material while sharing.

You can solve this problem by disabling hardware acceleration in Chrome. Have fun!