Directshow video playback

Is the video player in OF for windows based on direct show? I have a file that is in NotchLC codec (this is proprietary and a pretty amazing codec but not open source so support in OF is not likely) but it does playback with windows media player if I use an AVI file.

When i try to load it into the ofVideoPlayer it does not work. I thought that if it played back in windows media player it should play back with OF (It does not work with the newer windows movies and TV app - which I think is based on media foundation).

Can anyone let me know what the OF video player is based on and if I have any chance playing an AVI with a direct show filter?

Fred