I got side tracked by Designated Survivor on Netflix so its a bit late but here you go:
https://www.dropbox.com/s/p8fec3luw7i1b8b/TestMovieWithOverlay.zip?dl=1
Just point it at a video of your choice when you start it up.
I threw it together, taking snippets of code from some of my test projects so its not pretty.
The only caveat is that it needs a crisp edged image when using the chroma keying (SetLayeredWindowAttributes).
There’s probably other/better ways of injecting an image into the video stream or whatever but its late 
I also put the “canvas in front of the movie player” demo in there which is much easier to use/do, if you have a flat edged solid logo, you could use that method.
Enjoy