Video files in HUD widgets = performance heavy?

I’m looking for alternative ways to give my in-game menus some cool effects, and I realized one way to achieve this could be using video files.
My question is, are video files taxing in performance? Does the video framerrate have to match that of the gameplay?
Are there any issues in image quality to be concerned about, such as artifacts or similar?

Thank you very much for your help!

I don’t know how performant video playback is compared to flipbook. framerate can be whatever you need but the resolution should match the used screenspace; no 4k video on a 200x200p square.