SMIL Introduction

SMIL 是一种用于描述视听呈现（audiovisual presentations）的易于学习的类似 HTML 的语言。

您应当具备的基础知识

在继续学习之前，您需要对下面的知识有基本的了解：

  • HTML
  • XHTML
  • XML
  • XML 命名空间

假如您希望首先学习这些项目，请在我们的首页访问这些教程。

什么是 SMIL？

  • SMIL 指同步多媒体集成语言
  • SMIL 的发音是 "smile"
  • SMIL 是一种用于描述视听呈现的语言
  • SMIL 易于学习和理解
  • SMIL 是一种类似 HTML 的语言
  • SMIL 使用 XML 编写
  • SMIL 呈现（SMIL presentations）可以使用文本编辑器来编写
  • SMIL 是 W3C 标准

简化的 SMIL 例子：

<smil>
<body>
  <seq repeatCount="indefinite">
    <img src="image1.jpg" dur="3s" />
    <img src="image2.jpg" dur="3s" />
  </seq>
</body>
</smil>

从上面的例子，您可以看到 SMIL 是一门基于 XML、容易理解，而且可以被简单的文本编辑器编写的语言。

<smil></smil> 标签定义 SMIL 文档。<body> 定义呈现的主要元素。<seq> defines the display sequence.repeatCount Attribute defines an indefinite loop. Each <img> Elements are all src Attribute to define image resources, while dur Attribute defines the display duration.

What can SMIL do?

  • SMIL can be used to create Internet and intranet applications
  • SMIL can be used to create slide show presentations
  • SMIL has been described as the Internet equivalent of PowerPoint
  • SMIL presentations can display multiple file types (text, video, audio...)
  • SMIL can display multiple files simultaneously
  • SMIL can display files from multiple web servers
  • SMIL can include links to other SMIL presentations
  • SMIL presentations can include control buttons (stop, start, next...)
  • SMIL has functions to define element sequence and duration
  • SMIL has functions to define element position and visibility

In W3C's SMIL

Since 1997, W3C has been developing SMIL as a language for fine-grained multimedia presentation, combining video, audio, text, and graphics in real time.

In November 1997, SMIL was submitted as a working draft.

SMIL 1.0 became a W3C standard in June 1998.

SMIL 2.0 was established as a W3C standard in August 2001.