Video and Movie topics

Hi: What is the difference between "frame rate" and "refresh rate"? Is it best for the frame rate to have a frequency the same as the power supply [60 Hz in USA/Canada, 50 Hz in Europe/Asia]? Is this true ...

The Sony HDR-HC5 supports firewire and HDMI transfers.  Which one would result in the best resolution?  If I bought a HDMI card for the PC, would I obtain the uncompressed image or would it be a mpeg2 stream? ...

Hi, Can someone give me a quick difference on video quality between the Kodak camera that shoots 30fps 640x480 and the Canon Eleura 100? I need something that can transfer via USB into the computer and then be edited easily. ...