Dynamic movie posters or background?

I have a decent collection of dynamic movie posters and backgrounds, I’m curious to know if its possible to add them to my collections? even if I host the image (gifs, etc) myself

I don’t think it’s currently supported. There’s a feature suggestion asking for such an option but it’s seen very little interest from the community.

I had no idea there was little interest, in my home country of Canada I see dynamic posters at the Cinemas all the time (like when the 007 or Hunger games got released)