Ginput freezeing movie in GUI

Hi,

I have GUI where I load movie from mp4 and play it in program. Every frame is analysed and I'm searching for special objects. I Iwant to click on movie to select, which object should be tracked. I use "ginput" to get the [X,Y] but the problem is, when I use "ginput" the movie pauses. The movie is playing in a while loop frame by frame. And the "ginput" is called by other button. Could you help me how can I select by mouse [X,Y] on miove while it's playing?