I just asked Charles De Lauzirika on Facebook : Charles, I've got a question about the Alien Anthology boxset. In the Enhancement Pods section where Dan O'Bannon is talking about "Conceiving the Alien Lifecycle", there's a piece of footage showing a torch light moving around Giger's Alien Lifecycle painting. Is that the actual test footage from the Alien production which Giger briefly mentioned it in his Giger's Alien book?"
His reply was: "Pretty sure it is, yes."