Flash Player 11.3.31.232 change the size of video

Hello! I have Flash Player 11.3.31.232 As I can change the size of video (the size of the screen, a window) during viewing of rollers or films from the Internet? And whether there is a possibility to change the size of a window of a player during video viewings in public networks and dating sites? On your sites, unfortunately I couldn't find information necessary to me.

Thanks in advance!