examples of video effects using OpenGL

I want to get some example code of video effects or video transimition using OpenGL,where can I find it?

I have seen a free video effects editors that use openGL to create effects.

They have been mentioned in the openGL news on the main web page here.

Look on past news stories on this website or a google search “opengl video processing”

Originally posted by pango:
I want to get some example code of video effects or video transimition using OpenGL,where can I find it?