Video cutting into half in Rush

Hi,

I am not sure why the video is cutting itself in hlaf of it's size in the screen.

The actual video is squeezing itself into half of it's  original and half of the screen remains black in color.

As we can see half video is white, and half is getting dark grey. Which should not be the case.

Entire screen is supposed to be white, as seen in timeline. 

I also tried upgrading my graphics driver to the latest, but still didn't help.

Please help.

Thanks

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