WordPress fix How to get rid of horizontal black boxes around video?

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How to get rid of horizontal black boxes around video?, by meccaalim

Hello everyone,
I am currently editing the website and I uploaded an mp4 video on . As you can see, there is a wide black box both on the top of the video and on the bottom, but it isn’t there when I am on “Edit Page.” Is there any way I can get those two black boxes to go away?
Thank you,
Mecca

How to get rid of horizontal black boxes around video?