Method and apparatus for transitions and other special effects in digital motion video
A method and apparatus for transition effects in digitallycompressed motion video, such video complying with the MPEG-1standard. Transitions between two frames of video are effectuatedby selecting a FROM frame and a TO frame, generating a stream ofbidirectionally dependent duplicator frames which vary in theirmotion vector references to the FROM frame and the TO frameaccording to a predefined pattern, placing the FROM frame in thepast buffer of a decoder, placing the TO frame in the future frameof a decoder, feeding the stream of duplicator frames to thedecoder, causing the duplicator frames to be displayed, andbeginning normal playback of the video stream containing the TOframe at the TO frame position.
Toebes, J. A., & Walker, D. J. (1999). IPC No. U.S.Method and apparatus for transitions and other special effects in digital motion video (Patent No. 5959690.)