Creating HUD animation for VR using built in tools.

Hello friends,

I'm creating a VR game and want to create a transition for when users move from one camera to the next camera to cut down on motion sickness. Ideally it would look like an eye closing and opening.

From my understanding creating an animation as a .mov or other video type will be too costly when running my game. I'd rather use a post processing tool to create a quick procedural generated animation in Unity. I know how to do this in Unreal, but does Unity have a similar tool.

I suspect I would have to create two black planes and animate them over the HUD when a new camera view is selected, but I have no idea how to do this.