I have tracked drone footage, and imported a building model to put in my scene. In viewport shading, everything looks as it should. in rendered view, the movie clip is not taking up the full camera frame as it did in viewport shading, the ground plane now has the video footage (but only in the area of the plane that is within the camera frame) and the background is showing the sky texture i have added. Then, if i switch to cycles, the plane just turns pitch black. I am very lost. Please help.