AS2 flv player aspect ratio

does anyone know how to detect and maintain the aspect ratio of an incoming .flv in AS 2 so that a 4:3 video doesn’t stretch to fill up the whole space in a 16:9 player?

i’ve tried setting Media.aspectRatio and Media.autoSize to true, but i’m not getting any results. if there’s anyone who has some existing code that i could look at, i’d really appreciate it.

thanks!
g