Перевод "SMIL 3.0 Timing and Synchronization"

SMIL 3.0 Timing and Synchronization

5.1 Overview and Summary of Changes for SMIL 3.0

This section is informative.

The SMIL 3.0 specification leaves the basic syntax and semantics of the SMIL 2.1 timing model unchanged [SMIL21-timing]. The only change for SMIL 3.0 are that the four DOM method calls which were reserved in SMIL 2.1 have now been defined. A new module, DOMTimingMethods, was added which contains these DOM methods.

In addition to these changes, various typos were corrected and some clarifications were added.

5.2 Introduction

This section is informative

SMIL 1.0 solved fundamental media synchronization problems and defined a powerful way of choreographing multimedia content. SMIL 2.0 extends the timing and synchronization support, adding capabilities to the timing model and associated syntax. SMIL 3.0 adds Document Object Model support. Some SMIL 1.0 syntax has been changed or deprecated. This section of the document specifies the Timing and Synchronization module.

There are two intended audiences for this module: implementers of SMIL 3.0 document viewers or authoring tools, and authors of other XML languages who wish to integrate timing and synchronization support. A language with which this module is integrated is referred to as a host language. A document containing SMIL Timing and Synchronization elements and attributes is referred to as a host document.

As this module is used in different profiles (i.e. host languages), the associated syntax requirements may vary. Differences in syntax should be minimized as much as is practical.

SMIL 3.0 Timing and Synchronization support is broken down into 17 modules, allowing broad flexibility for language designers integrating this functionality. These modules are described in Appendix A: SMIL Timing and Synchronization modules.

5.3 Overview of SMIL timing