I have a Panasonic HD Camcorder with SD card. I take the SD card out put into the card reader on my Vista PC and transfer the files using the Panasonic HD Writer program. The length of time depends on the size of the file. HD files can be large. I doubt if it would be any easier on a Mac. If you are thinking of editing HD then you need a good processor, RAM and a large hard drive and a blu-ray writer helps too otherwise you will not get a HD disc.