Just to further clarify, the film of Page and Plant outside on a lawn with the Stones' Recording Truck, are from Headley Grange, not Stargroves. And the engineer who was with the band at Headley for the fourth album was Andy Johns, not Eddie Kramer.
Stargroves/Eddie Kramer was 1972. Different house, different engineer, different year. Whereas the footage you're asking about is from early 1971. I have never heard of any footage from Stargroves existing. There are lots of photos by Kramer from the sessions, though.