If I have a 2 second video clip, and want to slow it down to 8 seconds (and discard the audio), how can I do this? Preferably using VirtualDub? I understand that it'd be done by repeating frames, which is fine by me. If each letter represented a frame, and before it was XYZ, I would want it now to be XXXXYYYYZZZZ so the clip is 4 times longer. How is this done?