问题
Possible Duplicate:
silverlight media player with frame counter
We want to know whether we can get frame number?
回答1:
If you know the frames per second (FPS) then you multiply the FPS times the position in the media. MediaElement does not have a way to directly query the FPS.
来源：https://stackoverflow.com/questions/3193989/is-there-a-way-to-get-frame-number-in-silverlight-mediaelement-object