(written from a Production point of view)
The Making of Star Trek: The Motion Picture was a ten-minute documentary produced by Paramount Pictures in 1978. The featurette did not contain interviews but instead showcased behind-the-scenes footage of the production of Star Trek: The Motion Picture with an accompanying commentary.
Remarkable were the segments that showed the model makers at Magicam working on the various studio models at their company, the fitting of prosthetics to create various alien makeup, and the shaving of Persis Khambatta's head for her role as Ilia. Particularly noteworthy was the footage of the construction and destruction of D7-class breakaway models which was shot in the last quarter of 1977, while Magicam was still entrusted with providing all the visual effects for The Motion Picture's immediate predecessor, Star Trek: Phase II.
A rare and unique production, it was not seen for decades after the release of the movie nor was it ever included as a special feature on any of the home video releases. Recently, a version started to appear on the Internet on sites like YouTube but it is not clear if the featurette was ever broadcast on television as it lacks opening and ending credits.
The featurette was therefore apparently conceived as a a promotional tool produced by the studio intended to be shown in public places, as later Star Trek production staffer Doug Drexler recalled, "I remember that Paramount was running this in the lobby of Pennsylvania Station in NYC. Friends and I made several trips to Penn Station just to watch it!" (X)