I'd have to look up the exact syntax but what you are asking for can be done with animations like @faeran told you. You are basically looking to use boolean key frames. 0s key frame (or whenever you want to start playing the video) would set the FlowVideo control's PlayVideo property to True, then add another key frame at 7s that sets it to false. You would then need to shut off the animations repeat behavior. I'm unsure if CTC can handle the marquee or this advanced logic or not, but should be possible via the raw XAML