CGI Shadows

Was wondering if there was a way to get only the shadows created on a surface without actually getting the surface itself in blender. Basically want to add a 3d object to a video, and have that objects shadow show up by placing it upon a “fake” floor (a plane). Then basically I don’t want the plane to be drawn, but only the shadow from it.

Sorry for the dumb question, just found the “shadows only” button. :slight_smile: