Encoding a video compresses it using a specific algorithm or codec. The Flash Player can read FLV files
encoded with either Sorenson Spark or On2 VP6; FLV files encoded with Sorenson Spark can be played in
Flash Player 6 and higher, whereas VP6-encoded FLV files require Flash Player 8 or higher. Many of the special
features of Flash video, such as alpha channel transparency, are only available with VP6 encoding.
822
Including Multimedia Elements Part V
Numerous paths to encoding FLV files are available, including the following:
n Flash Video Import Wizard: A feature of Flash Professional CS3, the Flash Video Import Wizard
works with all popular video formats, including QuickTime movies, Video for Windows (.avi),
Windows Media (.wmv), and video directly retrieved from your camera (.dv or .dvi). The Flash
Video Import Wizard works with one video file at a time.
n Flash 8 Video Encoder: The Flash Video Encoder is a separate program included with Flash
Professional CS3 (see Figure 26-1). The key advantage to the Flash Video Encoder is that it allows
you to encode many video files (again, from all formats) to an FLV-compatible codec. Encoding a
video file can be time intensive: a 35-second video took 23 minutes to encode in On2 VP6 format
at medium quality.
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