A married print is a film print which has had an optical soundtrack added onto the print. As the process usually is fairly expensive and resource-intensive, it usually is one of the last stages of post-production. Due to the intermittent motion of movie projector

Movie projector

A movie projector is an opto-mechanical device for displaying moving pictures by projecting them on a projection screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras.-Physiology:...

s and movie camera

Movie camera

The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film which was very popular for private use in the last century until its successor, the video camera, replaced it...

s, the sound cannot be located adjacent to the actual frames it is synced to, but instead must be offset by 21 frames (35mm). Because of this, a married print can not be edited, and thus should only be done when the picture edit has been "locked" (as well as the sound, of course). Marrying a print is often done at the stage of the answer print

Answer print

Answer print refers to the first version of a given motion picture that is printed to film after color correction on an interpositive. It is also the first version of the movie printed to film with the sound properly synced to the picture....

, although this is not strictly a requirement.