Parented object to camera doesnt show up in render

I have parented a blue plane to my camera in the editor to act as a bluescreen for my foreground objects and while in the sequencer it moves normally with the camera, facing it and everything, when i click render the plane returns and stays at its original position as if it was never parented to the camera. how can i make it so it stays parented in the render?

maybe it needs to be inside the seq

i do put it inside the sequence too but nothing changes