I recently made some short films. Part of the film was shot in 720p @60fps and part of it was shot in 1080p @24fps. Pretty nasty combo so I just outputted as 720p at I think 24fps either way it came out looking great but I got thinking what if I just up-scaled the 720 clips....so I ran some experiments using Adobe Premiere! I up-scaled 1080p @24fps to 2560x1440 (still 16:9 ratio) and to my great surprise the quality was still spectacular even displayed at full 2560x1440! Obviously that high of a resolution has no purpose so I tried some other things. I up-scaled 720p @60fps to 1080p @ 60fps and I didn't notice any difference in quality again at full resolution and it still looked excellent! I then went to extreme's and did 1080p to 3k @ 16:9 ratio; that is 3072x1728....VLC wouldn't play it but Quick time would just not in full resolution....interesting results...I think I'm going to stick with always outputting 1080p (but no higher than that for lack of application reasons). Anyone else have similar results? If not give it a try! I took some just 30 seconds clips and upscaled them for the sake of time....I'll post links as I uploaded a few to YouTube unlisted and if you have a iMac or cinema display you'll be able to better compare.