Your whole premise lies on the fact that the TV gimic of 120 hz, 300 hz etc. makes (example. football games look better.) This is just a gimic. The real and only method that counts, besides a good uprezing, is the adaptive motion algorithm that reduces judder swish pans in DVD’s, which in the newer models, you can turn on and off. Our eyes can only see up to 60-70hz or 60-70fps. Try outputting a 100 fps file and see if you can see a difference. Now if you’re still a go, read on…
I think you mean 25i which is 50 fields/sec. not 50i. Now if you want to convert the 50 fields/sec to 50 frames/sec render fields off, just interpret fields on, and drop the 25i into a 50fps comp and AE will automatically do a no interpolation stretch and turn each field into a frame. Its a good method for motion tracking and rotoscoping, but not for greenscreening.
You said,
“So.. concluding…. If you shoot in 25p is better than to interpolate 50i.. but if you shoot in 50i it should be much better to interpolate at 50p than to do it at 25p.”
25p is better than interpolate 50i is a backwards statement. If according to your premise you want smoothness, you would actually say, “”25i is better than 25p because you have smoother motion and more data.
You are right though about interpolating at 50p is better than than 25p. to get to 100 fields/sec… if that were usefull or neccessary…
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