I can't do this, but I would like to configure theme in this that in the photo location (the one with the ShutterStock watermark) located at URL:

dizajnersi

Instead of photo I would like to have video was visible exactly as it is available at:
http://pennews.pencidesign.com/pennews-video-news/fresno-state-basketball-lands-big-man-class-2018/

Could you please describe how to do something like this?

Even if i set correctly parameters in admin data to 'Film'(Video in Polish)

After clicking Update post in Wordpress and refreshing this page, it goes back to Standard for no reason.