If you want to place video responsive to page you need to set stages properties "Center Stage=Both" and "Responsive Scaling=Both". Ypu also can place a symbol on video and it must work.
Thanks for replying, but with your instruction, I am now losing height on the video. Maybe I need to clarify what i meant...
This animation is for a full width page header, so I need the width to be 100% and the height to be 50%.
I want to keep the height of the video fixed, always aligned top... but ideally lose the edges on a smaller browser size (centered).
Sorry for the confusion!
How are you inserting your video?