Content Package

Bambi.TOC

Index File 1X play speed

Index File 4X play speed

Index File nX play speed

Data File 1X play speed

Data File 4X play speed

Data File nX play speed

Start of Tape

Tape

Start of Data Files

FIGURE B-2Tape Storage Format

The TOC file must be positioned as the first file in the tar tape and must have a file extension of .TOC. Except for the file extension, the naming of the TOC file is arbitrary. In FIGURE B-2, the TOC file is named Bambi.TOC, to indicate it is the TOC file for the movie “Bambi”. Naming for the data and index files is arbitrary. However, their pathnames must be consistent with those specified in the TOC file.

In FIGURE B-2, note that index files precede data files. This arrangement, while not mandatory, takes advantage of the Sun MediaCenter software’s error checking. The server might find a value in an index file that indicates an error in the storage format of a data file. You can detect and correct the error quickly, rather than, for example, waiting 20 minutes or more to load a 2-hour MPEG title, only to find out there is an error revealed in one of the last index files on the tape.

Note If the TOC file contains multiple segments for a DataFilesObject (see page B-3), the files corresponding to each of the segments of the DataFilesObject must be stored sequentially in the tape archival.

Appendix B Creating a Content Package B-13

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Image 167
Sun Microsystems 2.1 manual Figure B-2Tape Storage Format