On Tue, Dec 29, 2020 at 9:56 AM Mark Filipak (ffmpeg) <markfili...@bog.us> wrote:
> On 12/29/2020 03:41 AM, Paul B Mahol wrote: > > On Tue, Dec 29, 2020 at 5:51 AM Mark Filipak (ffmpeg) < > markfili...@bog.us> > > wrote: > > > >> I seek a way to do simple bob (i.e. repeat fields at 2xFPS) with no > other > >> filtering. Can you help me? > >> > >> I suppose I could do something like this: > >> -filter_complex > >> > >> > "split[s1][s2],[s1]separatefields[A1][a1],[s2]separatefields[A2][a2],[A1][A2]weave[Ao],[a1][a2]weave[ao],[Ao][ao]merge" > >> (Kindly forgive any mistakes -- I haven't done anything like this in a > >> couple of months.) > >> But I thought I'd ask here for an easier way. > >> > >> These gave pretty good results. They're listed from best to worst: > >> bwdif > >> yadif=send_field_nospatial > >> yadif=send_field > >> > >> However, I suspect that, in addition to mechanical frame changes, > they're > >> also making some > >> (unwanted) cosmetic changes. > >> > >> Based on what's written in the documention, these seemed promising: > >> separatefields,doubleweave > >> separatefields,tinterlace=mergex2 > >> > >> But they produced surprising and undesired results. > >> > >> Optional Reading: > >> > >> I also tried this: > >> > >> separatefields,select=eq(mod(n,4),0)+eq(mod(n,4),3),weave > >> > >> It's not what I actually want, but I tried it because it doesn't make > >> sense to me -- weave together > >> fields N%4==0 and N%4==3? (Really? Modulo-4? fields 0 & 3?) -- so, > because > >> it doesn't make sense to > >> me, I thought I might learn something interesting. So, what happened? > >> "Conversion failed!" is what > >> happened. Why it's cited as an example ( > >> https://ffmpeg.org/ffmpeg-filters.html#Examples-121) in the > >> documentation is a mystery to me. > >> > > > > After so much time you still struggle a lot, buy some GUI tools and be > > happy ever after. > > You're not helping, Paul. > I'm helping you so you can help yourself. > > > You probably missing \ to escape every , inside expressions. > > I'm running in Windows. > That is not important. Either escape ',' inside expressions or do not ask for help if you gonna ignore help. > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
