var flashVersion:String = getVersion();
trace(flashVersion); // output: WIN 8,0,1,0
trace($version); // output: WIN 8,0,1,0
trace(System.capabilities.version); // output: WIN 8,0,1,0

The getVersion() function will tell you what version of Flash the user
has. You can select an appropriate video format based on that.

Pipey

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