NPTs for a reverse-playing stream must monotonically decrease, from beginning to end of the index file.

NPT is a time offset into the content as one would view the content at normal speed, not the time at which the pictures are presented (PTS).

B.5.2 File Offset

The value in the file offset field specifies the byte offset into the MPEG-2 data file corresponding to the start of the splice point. It is a 64-bit integer value.

File offsets must monotonically increase, from beginning to end of the index file.

B.6 Tape Storage Format

Tape storage for the Sun MediaCenter server contains one content package. The tape storage format is the tar format. Use the tar utility to store the individual files of a content package on a tape. Use the smc_tar utility, described in Section 5.3 “The smc_tar Utility” on page 5-8, to extract a content package from a tape.

Consult your tar documentation for details of the tar format and for the syntax of the tar command. Unix (including Solaris) users can consult the tar (1) man page.

Note In the current version, you can have only one content package per tape.

B.6.1 Tar Format

The tar format for tape archival maintains an internal table of contents, thus obviating the need for a separate list. The files that are to be extracted from the tape using tar are illustrated in FIGURE B-2, below.

B-12Sun MediaCenter Server Administrator’s Guide • December 1997

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Sun Microsystems 2.1 manual Tape Storage Format, File Offset, Tar Format