Is it possible that in one of these very rare Laser discs exists footage of James Earl Jones recording his DV lines? Or did they not use to film actors while doing voice over work like they do now?I know that mostly happens when it's an animated film but reading about all the never-before-seen footage that may be in there got me wondering about this. In the LDs or elsewhere, I'd very much like to see JEJ back then bringing Vader to life.

Has anyone got any idea if said footage exists? If so, link please! :)