Problem with correctly displaying a vertical video on facebook


I edited together several vertical phone videos in Hitbox. I then published the video to facebook. When I or others view the video on a laptop, everything is fine, but when viewing it on a cell phone, the "black areas" to the left and right of the video itself is treated as though they're a part of the video, so to speak, so that when you view the video in the upright position, the video is tiny. In other words, it seems as though my vertical video is interpreted as being widescreen.

I hope this was understandable; does anybody know how to fix it?


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