kMovieMediaClipDuration
A record that indicates the duration of the embedded movie to use.
Overview
A MovieMediaTimeRecord that indicates the duration of the embedded movie that should be used. The clip duration atom is applied by removing media from end of the embedded movie. If the clip duration atom is not present, then no media is removed from the end of the embedded movie. In situations where the sample contains both a clip duration and a clip begin atom, the clip begin is applied first. If the clip duration specifies a value that is larger than the duration of the embedded movie, no change is made to the embedded movie.