I'm running a TV studio in a school at the moment, and everything we record is recorded straight to Prores422 in 1080i. We do some chromakey work so of course I keep that footage in Prores422, but... for everything else, all the other equipment here is all Standard Def 576i or projected on equipment that supports not much more than 720 frame sizes. As it's a school with limited hard disk space, we simply have no need to have all our recordings in ProRes quality footage and we certainly don't need 1080i frame sizes just yet so I'm sticking with 720p for now. At the moment, for everything we record I batch convert to HDV 720p 50/25 and at the moment that's serving quite well and produces a reasonable file size without too much impact on image quality, but does anyone know if there is a better codec I could work with since HDV is certainly not my favourite, but it produces the file sizes I need to work with. Thanks all!