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MrC · 3rd October 2017, 13:41

Hi manolito, thanks for the feedback on the new Alpha.

I'm planning to alter a bit the routine to select the FPS conversion method, specifically for 30p/60p sources.

Currently, if Pulldown, SelectEven, PAL SpeedUp, NTSC SlowDown are not selected/feasible, then MotionProtectedFPS is used by default (with the option for the user to switch to ChangeFPS or ConvertFPS in Preferences section). MotionProtectedFPS does usually its job nicely, but we know it can introduce edge artifacts.

Nowadays many HD/FullHD sources are 30p and, when output is NTSC, probably the best approach could be to drop few frames (from 30 to 29.97) with ChangeFPS instead of applying motion compensation. Same for 60p sources: first SelectEven than ChangeFPS. Instead for PAL output the frames drop approach from 30p could provoke too much jerkiness.

What do you think? (open question to all Doom9 expert users, of course)

Bye

3rd October 2017, 13:41	#3050 \| Link
MrC AVStoDVD Dev Join Date: Apr 2006 Location: Italy Posts: 1,302	Hi manolito, thanks for the feedback on the new Alpha. I'm planning to alter a bit the routine to select the FPS conversion method, specifically for 30p/60p sources. Currently, if Pulldown, SelectEven, PAL SpeedUp, NTSC SlowDown are not selected/feasible, then MotionProtectedFPS is used by default (with the option for the user to switch to ChangeFPS or ConvertFPS in Preferences section). MotionProtectedFPS does usually its job nicely, but we know it can introduce edge artifacts. Nowadays many HD/FullHD sources are 30p and, when output is NTSC, probably the best approach could be to drop few frames (from 30 to 29.97) with ChangeFPS instead of applying motion compensation. Same for 60p sources: first SelectEven than ChangeFPS. Instead for PAL output the frames drop approach from 30p could provoke too much jerkiness. What do you think? (open question to all Doom9 expert users, of course) Bye __________________ MrC AVStoDVD Homepage AVStoDVD @ Doom9 Forum Last edited by MrC; 3rd October 2017 at 13:45.