On 4/14/20, Mark Filipak <[email protected]> wrote: > On 04/14/2020 04:23 AM, Paul B Mahol wrote: >> On 4/14/20, Mark Filipak <[email protected]> wrote: >>> How do I combine two combed half-pictures so that the resulting picture >>> is >>> screened? >>> >>> Combed input frame: >>> 11111... >>> 22222... >>> >>> Desired output frame: >>> 12121... >>> 21212... >>> >>> It occurs to me that I need to unweave the half-pictures, line-double >>> both, >>> screen both via >>> pixel-sized screens that are offset by 1 pix, then reweave them. >> >> Look at weave, doubleweave, separatefields and so on.... > > Thanks. I'll run them through my tester. > >>> I've not found a line-doubling filter and I've not found a screen method >>> that actually works. > > Actually, after I posted, I thought of bob. I think bob line doubles.
I think you can double lines with separatefields,scale combination. You just need to set right size args to scale filter and use nearest neigbour interpolation for doubling lines. I still think that what you do is wrong thing to do. Why? mpv player already have various interpolation algorithms for X->60 progressive upsampling. Note that they are not motion ones, as that one is very fragile and slow. >>> Also, a method to zoom pixels in the output so I can actually see them >>> individually without a >>> magnifying glass would be very helpful. >> >> datascope or pixscope filter. > > Thanks again. > >>> I've tried every filter I could find that has anything to do with >>> blending, >>> screening, blurring, >>> etc., but I may have missed something. >> >> You are just a big troll. > > Yup! That's me! Mark, the ffmpeg troll. The troll of your dreams. Just keep > your hands to yourself, > Paul. > >>> A really ambitious method would be: Replace the combed frame with a >>> synthesized frame that's a >>> motion-vector meld of the preceding and subsequent progressive frames, >>> but >>> that seems pretty wild >>> and probably beyond ffmpeg's capabilities, but I simply don't know. >>> >>> Thanks, >>> Mark. > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
