---

Some Useful Examples and Scenarios

This chapter contains a number of examples that can help you pull together all of the material in this book by examining the atom structure that results from a number of different scenarios.

The chapter is divided into the following topics:

• “Creating, Copying, and Disposing of Atom Containers” discusses the various ways you can work with atom containers, along with illustrations and sample code that show usage.

• “Creating an Effect Description” discusses how you create an effect description by creating an atom container, inserting a QT atom that specifies the effect, and inserting a set of QT atoms that set its parameters.

• “Creating Movies With Modifier Tracks” provides sample code showing you how to create a movie with modifier tracks.

• “Authoring Movies With External Movie Targets” discusses how to author movies with external targets, using two new target atoms introduced in QuickTime 4.

• “Adding Wired Actions To a Flash Track” explains the steps you need to follow in order to add wired actions to a Macromedia Flash track.

• “Creating Video Tracks at 30 Frames-per-Second” discusses creating 30 fps video.

• “Creating Video Tracks at 29.97 Frames-per-Second” describes creating 29.97 fps video.

• “Creating Audio Tracks at 44.1 Khz” provides an example of creating an audio track.

• “Creating a Timecode Track for 29.97 FPS Video” presents a timecode track example.

• “Playing With Edit Lists” discusses how to interpret edit list data.

• “Interleaving Movie Data” shows how a movie’s tracks are interleaved in the movie data file.

• “Referencing Two Data Files With a Single Track” shows how track data may reside in more than one file.

• “Getting the Name of a QuickTime VR Node” discusses how you can use standard QuickTime atom container functions to retrieve the information in a QuickTime VR node header atom.

• “Adding Custom Atoms in a QuickTime VR Movie” describes how to add custom atoms to either the QuickTime VR world or node information atom containers.

• “Adding Atom Containers in a QuickTime VR Movie” shows the code you would use to add VR world and node information atom containers to a QTVR track.

• “Optimizing QuickTime VR Movies for Web Playback” describes how to use the QTVR Flattener, a movie export component that converts an existing QuickTime VR single node movie into a new movie that is optimized for viewing on the Web.

---