Sun Microsystems MEDIACENTER 2.1 - Manual (Page 166)

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