The five-minute clip of the much-anticipated film is available to fans worldwide on TheBeatles.com and streaming on Disney+.
McCartney has explained how his new album compares to its two home-made predecessors.
"We're having fun, we’re playing, you know," said Ringo of his reaction when he saw some of the footage.
The forthcoming Peter Jackson-directed ‘The Beatles: Get Back’ documentary will offer a revelatory look at the band. Here’s what we know so far.