Configure video height

Hello, I’m using a theme called Shapelly. As can be check in the link provided, the theme use a background image. I’m using this plugin to add a backgroud video in place of the first image. I’m able to change the image to the video, but the video is taking all home page. Am I able to specifie the place that video will occupate, to take only the space that was the image ?

Thanks for your attention.