Changing a playback speed for video presentation recorded in a modified film format

摘要

The invention includes a system and method 300 for changing a playback speed of a selected video segment having repeat fields. To achieve fast motion play a selected video segment can be modified to delete repeat fields 340. Further pictures can be deleted as required 360 to achieve a desired playback speed. To achieve slow motion play, a selected video segment can be modified by encoding repeat fields into conventional field pictures. Further pictures can be added as required to achieve a desired playback speed 330. Further, a repeat first field flag in the picture header of the picture containing the repeat field can be set to zero 325. Furthermore, a GOP structure of the modified video segment can be reencoded into a conventional 365 or a desired 367 GOP structure. Additionally, the modified video segment can be recorded exclusively on a desired portion of a storage medium 370.