I was trying to create the edge detection effect where you can offset/colorize/thicken the edge from one of the tutorials. It works on vector type sources, but not on a video source. On a video source it just creates a line on the bottom of the frame that you can zoom in or zoom out. It doesnt actually detect the edges of the objects in the video. I simplified the wire patch to just take a texture in to the edge detection node to a texture out and it doesnt do anything other than black out the whole image.
Here is the basic patch in wire:

Here is the video with that effect activated(I turned down the Opacity so you can see some of the original, Full Opacity is just a black screen):

Here is the video with the default Edge Detection effect activated, this is what I am expecting the Wire effect to do:
What am I missing?