The Flintstones : Hollyrock a Bye Baby
Starring Henry Corden, Jean Vander Pyl, Frank Welker, B.J. Ward, Jerry Houser, Russi Taylor, John Stephenson, Janet Waldo, Raquel Welch, Mark Hamill
It's a animation and family movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.