J. McCormick
You aske dfor a video or film of Woody Guthrie.  This is really off-the-wall,
but do you remember the late 1960s movie, "Alice's Restaurant," with Arlo
Guthrie?  Was Woody Guthrie still living then?  If so, I think he made a cameo
appearance in that movie - he was dying of emphesema.  Or maybe he was already
gone and it was an actor portraying him.  Can't remember back that far!

Also, it seems like there was a documentary film about him that I've seen
somewhere -

Sorry not really much help.