Decimation Question

[ZacharyGeorgeNN]

Hi,

I'm trying to decimate this silent film, but the patterns seem very random. Is anyone able to work it out from this sample? https://mega.nz/file/FddFWSIb#fGZ_yA5YK4CgGIUz6zm2hPFyOswFlPGpZt_P30X0rq4

[davexnet]

Did you try tfm().tdecimate in Avisynth,
it yields just over 19 fps

[ZacharyGeorgeNN]

Did you try tfm().tdecimate in Avisynth,
it yields just over 19 fps

It came out to 23.976 when I did that

[jagabo]

Try:

Interleave(TFM(field=1), TFM(field=0))
TDecimate(Cycle=75, CycleR=51)

That leaves you with 19.181 fps. I didn't notice any duplicates but the underlying video appears to be missing some film frames.

[davexnet]

Did you try tfm().tdecimate in Avisynth,
it yields just over 19 fps

It came out to 23.976 when I did that

yes, my mistake, I modeled my script from an earlier one, missed something.
I effectively had
tfm().tdecimate().tdecimate()
which does yield 19.18 fps
jagabo suggests the usage of Interleave; may be an advantage I was not aware of