This is a full video of Fritz Perls' session with Gloria from the film "Three Approaches to Psychotherapy" (1965). It's in high quality from the DVD and it's a full length video.

In this video Fritz Perls demonstrates his Gestalt Therapy with a patient, "Gloria". She is a real person (not an actress) and she has done three sessions with three different therapists in a single day.

The three therapists in the film "Three Approaches to Psychotherapy" are:

Carl Rogers
Fritz Perls
Albert Ellis