3D FlipBook - Video Size and Position Question.

I would like to place have the video in the upper right corner of the window 'cover' the static image below it, playing when the page finishes loading.

https://drive.google.com/file/d/1CCvKbimkf7qsPCcgH_tZJgETR4IqzcNv/view?usp=sharing

Right now, the video is displays too small. I took the original dimensions from a screen shot. The plugin is using a larger image.

Do we know the pixel dimensions of the 3D flipbook PDF page? I need to figure out how large the static image so I can size the video to cover it.

Second, can I resize my original video file with the dimensions in the CSS code or will I need to or should I resize each video to the final dimensions once I have them.

Thanks everybody.