Its pretty weird, but I'm clueless about encoding so...twonlineUserMay 20 2012 at 03:44 UTC9Sankyuu!B Boy RockUserMay 20 2012 at 04:04 UTC10Well the reason for varying file sizes as opposed to is the use of CRF encoding which uses as much data it needs to provide consistent video quality. Rather then just limiting everything to a set bitrate (action scenes or still frames with lips moving). What I'm interested in I guess is how CRF actually works with h264. I can more or less guess how it all works, but have never actually heard or read anything on it.Eiichiro OdaUserMay 20 2012 at 05:26 UTC11Sankyuu, UTW-sama!msa502TrustedMay 20 2012 at 05:33 UTC12The contents of the video that matters. For the same crf setting (say crf 18), a full-blown action video always ended up with larger file size than a dialog show. Not counting grain, raindrops, noise etc (think C³ OP, Steins;Gate OP).So, for the same show, you could expect an action scene with much larger file size.IntumesceUserMay 20 2012 at 07:13 UTC13Thank you as always, UTW.B Boy RockUserMay 20 2012 at 10:57 UTC14Thanks msa, but that much I'd already guessed/heard. What I'm interested in is the more technical side of this like exactly how they calculate bit and how that works with different levels of compression. My current assumption is that they takes regions from frames or shapes perhaps and go alright this sections all this colour. So they store data saying I dunno something like a shape and what colours are used and for how many frames that is displays. Then with higher settings they just might more exact with this. But I really have no idea. That's just part of the rough idea I've made up in my mind.gilvanlUserMay 20 2012 at 12:37 UTC15Arigato !kiriosUserMay 20 2012 at 13:59 UTC16SankyuuPost a comment:You need to be logged in to post a comment.