Sun Microsystems 2.1 manual B.5.1 Normal Play Time

Note –For video formatted as MPEG-2 Transport Streams, the CM automatically generates index files for titles that contain trick play streams, at the point when content is loaded onto the server. For other formats, you must generate your own index files.

The index file consists of a sequence of splice points. Each splice point is of the following format:

< normal play time > < file offset >

Each entry in the index file represents a single splice point. For forward-playing streams, the first entry must be:

0 0

For forward-playing streams, the last pair must be:

<total NPT > < bit stream file size >

For reverse-playing streams, the first entry must be:

< total NPT > 0

For reverse-playing streams, the last pair must be:

0< bit stream file size >

B.5.1 Normal Play Time

The value in the Normal Play Time (NPT) field, expressed in microseconds, specifies the time offset into the program. It is a 64-bit integer value.

The following are requirements and characteristics of NPT in an index file:

■The total NPT should be the same in all index files in a content package.

■NPTs for a forward-playing stream must monotonically increase, from beginning to end of the index file.

Appendix B Creating a Content Package B-11