Is it possible to display in categories posts videos, not just main images?

Hi! Thanks a lot for your theme! But:( Can I do something so that in the categories, some posts are displayed not "image + text", but "video"? It doesn't matter how: either just a video, or a video instead of the main image, or instead of the text ... somehow ... I will have a whole category where it is necessary that all posts are displayed as video, and could be played at once in a category, without passing for viewing in the post. Help me, please(((