ActionScript 3.0 :: Getting Different Frames Of Video?

I need to get random frames of a video on request. I am using bitmapdata.draw(video) for this. But the problem I am facing is that I am not getting the snapshot of the exact frame. The video is there on localhost so I suppose the problem cannot be of Enhanced seek.

What happens is that when I do ns.seek(someTime), the videoContainer displays the required frame but the snapshot is taken according to ns.time ( which is not changing upon ns.seek(someTime)). So, the snapshot is something else and the videoContainer is displaying something else. Wierd!!

The code is:

ActionScript Code:
function manageData(str:String):void
{
var frameno:int=int(str);

[code]....