How to achieve Fast-forward/rewind functions when using VideoDisplay

I use "VideoDisplay" instance for progressive download of
videoes from a server. Is anyone know how to add
fast-forward/rewind functions using Actionscript 3 with
VideoDisplay object?
or is there anyway to do it when playing videoes through
progressive download?
Thanks in advance.

Matt,
Thank you very much for your help. The thread is quite
interesting.
I can only make the video jumping forward/backward at the
step of 10 seconds by changing VideoDisplay's "playheadTime"
property. When I set the step down to 1 second,
the video is "frozing", and the playheadTime is going 1
second forward/backward, then return back to where it is, and going
1 second forward/backward, then return back to wheare it is again,
and repeats forever.
For the FLVPlayback class, it is not available in Flex
builder 3, why?
Thanks again,
Regards,
Fan

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How to achieve Fast-forward/rewind functions when using VideoDisplay

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