• Chapter (QuickTime, Windows Media): This feature lets you mark points in your movies that the user will see as chapters, allowing them to skip to different points in your video without having to use fast forward or rewind. You can even give your chapters custom names to help the user navigate.
• Display Text (QuickTime, Real, Windows Media): This feature sticks a text field beneath your movie, which you can then edit for start time and duration, which you might want to use for synching text with audio (closed captioning) or to instruct the viewer to click on a hotspot, etc. Text can be displayed at any point in the movie, and there appears to be no limit as to how many different text messages you can embed. (Cleaner 5's documentation includes special instructions for dealing with text when encoding for the Real format.)
• Go to Time (QuickTime): This lets you tell a movie to go to a time specified. If you're using interactive menus, for example, you can create hotspots over them so that the user can skip ahead to the part of the movie that interests him or her. You can also use it to loop the movie.
• Keyframe (QuickTime, Real): The keyframe event lets you manually insert keyframes into your movie file (by time, not by frame) for when users will be able to access the movie at that particular time, such as when you're using the Go to Time event.
• Open URL (QuickTime, Real, Windows Media): This is an outstanding feature. You can use it to sync HTML to your movie or to allow the user to click on a hotspot to call up an HTML file for more information. It also allows you to target a frame, so the viewer can read along while the movie is still playing. Let's say, for example, that you have a video that shows a man walking into a building. You can tell the movie file to open up a graphic of the building in a frame beneath the movie and a text history of the building in a frame next to the movie—all without the end user having to do anything. Or you can just create a hotspot to let the viewer click on an object to find out more information about that object. Maybe the hotspot calls up information about how the user can purchase the object he or she clicks on. Maybe your movie is a mystery, and clicking on an object calls up information about a clue. Whatever. It's versatile.
• Pause (QuickTime): This will tell your movie to stop on a certain frame. This is great when you're using interactive menus. Let's say, for example, that you're doing a newscast that contains several stories. At the end of each story, you could pause on a frame that contains menus, allowing users to go to a more in depth text story, load a QuickTime VR of a product discussed in the story or just continue with the newscast. The possibilities are endless.
• Play (QuickTime): This only works with hotspots and lets users continue a movie following a pause, such as in the case of pausing to display interactive menus. It can also be used as a replacement for the default QuickTime controls.
• Replace Movie (QuickTime, Real, Windows Media): This is a great one to use with hotspots. If you're giving users the option of viewing a number of different video pieces, you probably don't want to be taxing their bandwidth by having them download every single second of footage. So you can break it up and let users choose which parts of your movie they want to watch. The movie then loads into the same window as the original movie. Another application might be placing advertisements in your movie. So, for example, you can tell your video file to replace itself at a certain point with "ad1.mov," which will then load the advertisement. The last frame of the advertisement will then go to the next segment of your movie. The benefit of this is that you can use generic file names like "ad1.mov" and "ad2.mov" to load any movie file with that name so that you don't have to go back and reencode your movie anytime an ad changes.
• Web Poster (QuickTime): This lets you select a frame that the user will then see while the movie is loading. Clicking on the poster starts the movie playing. It also sets the preview of the QuickTime movie, which can be useful because the default QuickTime preview is the first frame of the movie, which is often black and tells you nothing about the file.

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