The <EMBED> tag allows media file types other than those directly supported by the browser to be handled with an external application or plugin. In this case, the external application is QuickTime Player and the plugin is the QuickTime Plugin.
With the release of Internet Explorer 5.5 SP2 and later, you must use an <OBJECT> tag in addition to the <EMBED> tag for your web pages to be compatible with both Netscape and Internet Explorer on Mac and Windows systems.
The list of <EMBED> attributes is long; here we will document the <EMBED> attributes specific to QuickTime.
The Basic Necessities
The <EMBED> tag is similar to the <IMG> tag; they both have a SRC, WIDTH and HEIGHT parameter. These parameters are required and tell the browser the media to be displayed and the width and height of the media specified in the SRC attribute.
<embed src="sample.mov" width="320" height="256"></embed>
The SRC attribute is the media file to display either by an absolute or relative URL. The HEIGHT attribute specifies the vertical size in pixels of the SRC attribute. The WIDTH attribute specifies its horizontal size.
In order for the controller to appear properly, add 16 pixels to the height of a movie.
For example, set HEIGHT="256" for a movie 240 pixels high: <embed src="sample.mov" width="320" height="256"></embed>
For a sound-only movie, use a height of 16 for the controller and any width that looks good on your Web page. (If you set the width to 16 for a sound-only movie, the controller is minimized to a single Play/Pause button.)
<embed src="sound.mov" width="216" height="16"></embed>
Never set HEIGHT or WIDTH to less than 2, even if the movie is hidden.
Note: Extracted from Apple Computer