Flex Examples
The following example shows how you can display an FLV file with alpha channel transparency in an MX VideoDisplay control in Flex 3 by setting the backgroundAlpha style to 0.
Full code after the jump.
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2010/01/21/displaying-a-semi-transparent-flv-file-in-an-mx-videodisplay-control-in-flex/ --> <mx:Application name="VideoDisplay_backgroundAlpha_test" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" backgroundGradientColors="[#FF0000,#0000FF]"> <mx:VideoDisplay id="vidDisp" source="walking.flv" backgroundAlpha="0.0" width="80%" height="80%" horizontalCenter="0" verticalCenter="0" complete="event.currentTarget.play();"/> </mx:Application>
The walking.flv can be found at the “Introducing True Alpha Video in Flash 8″ article in the Adobe Flash Developer Center.
Peter deHaan
Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.
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