That Santa Barbara footage is actually a home video from Bruce's collection - shot by his wife, Harriet!
I was wonder if it was a home movie. It seems like an odd angle for a pro shot film. It actually looks like it was filmed on the stage. While we're on the subject of the Endless Harmony documentary, I have another question. Right after the Santa Barbara clip, there is a brief shot of Brian at the Long Beach show from 1981. During the making of "ED", did the members of the group view the footage of that Long Beach show? I'm curios to know what their reactions might be, several years after the fact.