Rosebud Documentary Indoor Performances

[cbBen]

Perhaps someone (maybe someone who has the liner notes to Rumors Deluxe) can clear a few things up for me. I know the outdoor performance are from Santa Barbara 1976. I've read that the indoor performances are from a rehearsal or are, in any case, not before an audience. Does anyone know:

1. Are the indoor performances indeed from a rehearsal?
2. If not, were they recored specifically for the film?
3. Were they in a studio?
4. Were they were recorded in 1976 or in 1977?
5. Were the videos for Rhiannon and Go Your Own Way aired on MTV as official videos? They say "Official Music Video" but I wonder whether the band released them as such in the seventies or early eighties, or only later retrospectively. If the former, it seems somewhat odd because they include snippets of interview footage.

Thanks.