Here is what I have, I shot a wedding with 3 cams. The third was a static cam just to catch wedding party entering. ceremony was approx. 25 minutes. I forgot about the camera (very hectic wedding) and basically recorded approx. 2.5 hours worth of crap. I want to trim the huge file down to just the 10-15 minutes needed before loading card for editing. I basically have a folder with 3 files..cam 1, cam 2 and cam 3. I am googling answers as well. I dont want to store hours worth of fottage for 10 minutes of usable footage to make a long story short.