Opening and Playing Files in a Web Browser
With the QuickTime plug-in (part of the free QuickTime software), you can play most multimedia you encounter on the Internet within your web browser. On some websites, movies play automatically. On other sites, you need to click an image of the movie or a play button.
When a movie plays on a webpage, you typically see the controls used: Play, Pause, Fast-forward, Rewind, & Volume adjustment.
To play a movie in a web browser, go to the website and follow the site's instructions to watch the movie.
The QuickTime website has a number of QuickTime movies (including the latest movie trailers) that you can view in your web browser. For more information go to http://www.apple.com/quicktime/
To download movies before they start playing: