I have a pre-rendered animation that I want to play on a TV model in my new scene animation, and I really don't know how.
Would I do it within Blender, or should I make the material on the TV screen green, so I can green-screen it on?
Add a new texture and set the type to image or movie.
Select a file, then set the source to either Sequence or Movie depending on the format your rendered animation is in. (e.g. Sequence for an image sequence, or Movie for a single video file.)
Add a new Image Texture node and open a file.
Add an image file to the node, or pick an existing image, then set the Source to either Sequence or Movie (this option will only appear after you select an image file), again depending on the format your rendered animation is in.