so I have a 3D TV model, but how could I put small videos on the screen? My idea is to change the texture frame by frame (or a video with separate frames) or there is a way to play it directly ???
If you want to play something you captured in game, you can use a scene capture component 2d (that would be the camera from where you want to render) and render onto a render target and update the image per frame and use this render target as texture on your TV screen. Keep in mind though that this is quite performance heavy, so you should keep the resolution of the render target as low as possible.