That is the most incredible virtuoso performance on the pedals I've ever seen and I've been an avid fan of pipe organs and organists since I was a child and that was over 60 years ago.. Diane Bish is the finest pipe organist in the world..
Saw and heard Diane Bish 4 years ago at an Allen Organ Dedication in Youngstown Ohio. She is fabulous. They had a big screen that just showed her footwork and another screen on the manuals.