A media converter uses DV codec. DV uses 3.6mg/sec, which is about 13GB/hour Since you are starting with pretty high quality, you could take the DV video files and then compress to a different codec, like iPod video, H.264 which will hold much much more. HandBrake is good for that process. regards, sb On 10/23/06 12:58 PM, "Malcolm Hamilton" <malcolm_hamilton at cbc.ca> wrote: > Hi there, > I'm wanting to copy 20 seasons-worth of the tv show I work for, onto > an external fw hard drive. > I'm playing the original half-hour Sony SP and SX show tapes, through > a Media Converter (firewire out) into my G4, via QuickTime, and onto > a 500GB external drive. > Can anyone tell me how many hours this drive will hold, with whatever > compression QT uses? > > Thanks, > mhcbc >