I added the image as a child of camera and sized it to fill view of camera.
Download Animated Background Unity 2D Background. Also one other thing you probably want to stay away from heavily animated backgrounds for mobile devices if that's you're target. It seems good in unity player however when i run it on my android devices, background seems short.
How To Create A Scrolling Background In Affinity Designer from cms-assets.tutsplus.com
This website is where it comes from. Sprite sheet and bone based animation supported is the primary reason people pick unity 2d over the competition. Specifically, unity can animate values for any of the following types you'll get more practice making animation clips in the next part of this tutorial, and you'll learn about using animator controllers to transition between.
We have crated a tile background but we never get to see much of it as our camera never moves.
This website is where it comes from. Both of them use the built in animator. It seems good in unity player however when i run it on my android devices, background seems short. 2d animation (2d games in general, not just in unity) is generally done using spritesheets because they give you the most flexibility.