I've seen this, and it is a wonderful find on several grounds. First, the DVD is clearer than the film. Second, there are dancer identifications. (Erik Bruhn is about 20 here, and is absolutely gorgeous. You can tell he's a great dancer, even though he's still a boy, and even though he is not yet fully trained.)
And third, it's a beautiful work.
Another thing that sis interesting about it is that, in 1948, the RDB was just at the cusp of their international period. Children were still being trained by the Bournonville Schools (two classes only, danced the Schools every day). There had been some dabbling in mostly Russian, or faux-Russian, styles by some of the stars, and some of the young men (Bjornsson, Bruhn and Stanley Williams) had been dancing in London, right after the war, but mostly this was a really truly Danish company -- no real Russian influence. They also haven't had a great classical ballet director for 30 years (when Hans Beck retired; Lander was a character dancer) and it shows.
The dancers are mostly very small. There were men around 5 feet tall and women a bit shorter. But they all look alike -- they dance alike. It's really like watching a family. Yet there were at least two tall men -- I believe Frank Schaufuss is in that (6'3) and I know Henning Kronstam was in it (5'11, at 13). I can find Schaufuss, I think, because there's one very tall man in one section, but I cannot find Kronstam (and believe, me, I've looked!) He was mentioned in a review, in which the reviewer complained that the company was so hard up they had to use a boy from the school, and even though Kronstam had had a major, pantomime role in an opera ("Peter Grimes") they shouldn't be using children.
Larsen is interesting, in Massine's role. Mona Vangsaa, 8 years from being Ashton's Juliet, already shows she has "modern" lines.
A few months after the premiere, Lander had the sets painted over and used as a backdrop for an evening of Bournonville divertissements. He did not want the Russian influence to come there (yet he began preparing a very young Toni Lander to be as Russian as possible, changing "Etudes" from Danish to Russian, sylphs to swans). This action is believed by many to have precipitated the Lander Scandal (he was fired after a court trial for sexual harrassment, but many feel that the dancers really wanted to get him out of the company).
Anyway, lovely DVD, glad it's out