National Theatres acquired the rights to the patents and began development of a 3 camera system using the same system. The resulting camera was bulky at 600 lbs (272 kg) - but had a number of interesting features:
The film was shot and projected at 26 fps from 6 perforation 35 mm film and sound playback was from a seven track magnetic system with five front channels and two surround channels that could be steered to the left, right or rear wall of the theatre.
The system used a 120 degree curved screen - this is somewhat less than Cineramas 146 degree curve, and was probably because Cinerama held key patents on the design of deeply curved screens. However the smaller curve had the advantage of being cheaper and easier to make and install.
A film was needed to showcase the format, and this came in the shape of the travelogue Windjammer, about the actual voyage of a large sailing windjammer named Christian Radich. "Windjammer" was produced by Louis De Rochemont and directed by his son Louis De Rochemont III. They had previously been involved with Cinerama Holiday, a travelogue in the similar Cinerama multi-projector format.
Jack Warner of Warner Brothers expressed an interest in the system and agreed to produce a film entitled "The Miracle" in the Cinemiracle format. However, it was later produced in Technirama instead. The patents for Cinemiracle were bought by Cinerama and effectively brought the format to an end.