Data stream reocrding method and device

An apparatus for selectively recording a first data stream in a first format, not a second data stream in a second format, on a storage medium,

• wherein each said data stream is an arrangement of a plurality of data units, each including compressed and encoded video data, and
• wherein in the first format, a first time range is set to define a permissible variation in the video playback duration of the respective data units, and
• wherein in the second format, a second time range is set to define a permissible variation in the video playback duration of the respective data units,
• the apparatus comprising:
• an input section for receiving a content representing the video;
• a compressing section for generating the compressed and encoded video data of the content;
• a stream assembling section for making the data units out of the video data such that the playback duration of each said data unit falls within both of the first and second time ranges;
• and
• a writing section for recording the first data stream, including the data units, on the storage medium.

A computer program product of a recording program, the program being executable by a computer to be used to selectively record a first data stream in a first format, not a second data stream in a second format, on a storage medium,

• wherein each said data stream is an arrangement of a plurality of data units, each including compressed and encoded video data, and
• wherein in the first format, a first time range is set to define a permissible variation in the video playback duration of the respective data units, and
• wherein in the second format, a second time range is set to define a permissible variation in the video playback duration of the respective data units,
• the program which when executed by the computer causes the computer to perform a processing, the processing comprising the steps of:
• receiving a content representing the video;
• generating the compressed and encoded video data of the content;
• making the data units out of the video data such that the playback duration of each said data unit falls within both of the first and second time ranges;
• and
• recording the first data stream, including the data units, on the storage medium.