Abstract: A storage medium stores image data, audio data and processing programs having different reproduction modes, such as recording systems or data format are stored as stream data. When a specific data is to be read out from the stream data, a mode discrimination data is separated from the data to generate mode information indicative of the recording system of the data and the algorithm for reproduction of the data on the basis of the separated mode discrimination data. Based on the mode information, switching of mode is performed to reproduce image data or audio data of one of the reproduction modes among the data recorded with a plurality of mutually distinct reproduction modes, by the processing program. If the processing program is common for reproduction of other data recorded on the storage medium, such processing program is previously stored for use in common for accelerating taking up of the reproduction processing apparatus.

Abstract: A storage medium stores image data, audio data and processing programs having different reproduction modes, such as recording systems or data format are stored as stream data. When a specific data is to be read out from the stream data, a mode discrimination data is separated from the data to generate mode information indicative of the recording system of the data and the algorithm for reproduction of the data on the basis of the separated mode discrimination data. Based on the mode information, switching of mode is performed to reproduce image data or audio data of one of the reproduction modes among the data recorded with a plurality of mutually distinct reproduction modes, by the processing program. If the processing program is common for reproduction of other data recorded on the storage medium, such processing program is previously stored for use in common for accelerating taking up of the reproduction processing apparatus.

Abstract: A presentation apparatus which can automatically adjust the total presentation time and presentation time intervals of a video material according to user's desired total presentation time so that the video material necessary for presentation can be screened within the desired total presentation time. The user inputs the desired total presentation time to the presentation apparatus. In the apparatus, the desired total presentation time is compared with a standard total presentation time to find a difference therebetween as an adjustment time. One of adjusting methods is selected on the basis of the found adjustment time. A data indicative of the selected adjusting method is stored in an adjustment memory.