On Mon, Jan 4, 2021 at 9:21 PM Mark Filipak (ffmpeg) <[email protected]> wrote:
> On 01/04/2021 02:45 PM, pdr0 wrote: > > Mark Filipak (ffmpeg) wrote > >> > >> You wrote: "What's wrong with using setsar filter after tinterlace?" > >> > >> I tried that from the git-go. I just reran it. > >> > >> ffmpeg -report -i "source 720x480 [SAR 8x9 DAR 4x3] 29.97 fps.VOB" > >> -filter_complex "separatefields, > >> shuffleframes=0 1 2 4 3 6 5 7 8 9, split[Ain][Bin], > >> > [Ain]select=not(eq(mod(n\,10)\,2)+eq(mod(n\,10)\,3)+eq(mod(n\,10)\,6)+eq(mod(n\,10)\,7))[Aout], > >> > [Bin]select=eq(mod(n\,10)\,2)+eq(mod(n\,10)\,3)+eq(mod(n\,10)\,6)+eq(mod(n\,10)\,7), > >> tinterlace, > >> setsar=sar=8/9, bwdif=mode=send_field:deint=all, decimate=cycle=2[Bout], > >> [Aout][Bout]interleave, > >> tinterlace, setsar=sar=8/9, bwdif=mode=send_frame:deint=interlaced" > >> -codec:a copy -codec:s copy -dn > >> output.mkv > >> > >> Putting setsar after tinterlace doesn't work. I did investigate that > but I > >> can't recall why -- I > >> think it's because DAR is then wrong. The report is below. > > > > > > You can't interleave images with different dimensions > > > > Aout has separated fields, to 720x240 , but Bout is 720x480 > > [Bout] is 720x240: I'm using 'mode=send_field' in 'bwdif=mode=send_field', > and the following > 'decimate' doesn't change that. The problem is that 'tinterleave' is > marking the output as "SAR = > 16:9" instead of "8:9" (which is what it should be and should never be > changed). > > SAR cannot change unless DAR/PAR changes (which it doesn't). Look: > > SAR = DAR/PAR = (8:3)/(720:240) = (8:3)/(6:2) = 8:9 > SAR = DAR/PAR = (4:3)/(720:480) = (4:3)/(3:2) = 8:9 > > The current tinterlace filter is setting SAR = 16:9. That is just plain > wrong. > That is just invalid statement. > _______________________________________________ > 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".
