itunes extra playing videos in different sizes

I bought avengers end game today from iTunes I am watching extras it is very frustrating annoying I click on video it’s smaller than 1280 , 660 , I click on another video it’s 1280 , 780 is there any way in iTunes extras to play any video to have video player stay same size before I use to watch videos in iTunes window and video player will stay same all time iTunes version I have is 12.9.5.7

if there is way to fix solution I appreciate tired of having to fix video player every time to big and small with new video I decide to watch thank you if there is reply to help