how to maintain aspect ratio in flash as3 video

I have created a flash video player using as3 (videoObject) but when I play the video the video is streched how to开发者_开发百科 tell flash using as3 to maintain aspect ratio.

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Can you use:

myVideo.scaleMode = "maintainAspectRatio";

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Well, if you're putting it up online, you could always use HTML to do so:

Flash will do this for you, automatically, if you publish your file (File -> publish).