As far as we know, the Concorde barrel rolls were never caught on film.
More's the pity, since during the filming of "Airport 79 - Concorde" Jean Franchi proposed doing a real barrel roll in front of the camera instead of that stupid loop they used in the end.
Oh, and ... during the event for the 40th anniversary of the 1st Concorde flight, André Turcat again confirmed the barrel roll stories. What annoyed him most about it, he said, was that he hadn't had the opportunity of doing one himself....