Method and apparatus for authoring a 24p audio/video data stream by supplementing it with additional 50i format data items

摘要

Movies are produced in 24 Hz frame frequency and progressive scanning format (denoted 24p) for projection in film theatres, adhering to a worldwide standard for 35 mm film. However, the major TV systems in the world use interlaced scanning and either 50 Hz field frequency (denoted 50i) or 60 Hz field frequency (denoted 60i). Content providers would prefer providing single-picture-frequency single-audio-speed AV discs that can be replayed in most parts of the world. A 24p audio/video data stream is supplemented with additional 50i format data items thereby allowing 24p and 50i format replay of that data stream.