OK, I just made a copy of the complete list of credits at the end of the video, and then I compared them against the list at IMDb.com of movies Michael York is in. Cabaret is the only movie I saw on both lists.

However, I'm still not certain. The final clip with Michael in it was definitely Cabaret, but he looks younger in the clip in which he is wearing the grey uniform and the cap.

And can anyone tell us what movie has the two men ballroom dancing?