Smoother VIVTC

[Q3CPMA]

Hello,

I've tried using all the modes for VFM, but I still can't get something as smooth (with my flawed source) than ffmpeg -vf "fps=30000/1001, pullup, dejudder". Any idea about a better solution than vivtc?

Thanks.

[poisondeathray]

I've tried using all the modes for VFM, but I still can't get something as smooth (with my flawed source) than ffmpeg -vf "fps=30000/1001, pullup, dejudder". Any idea about a better solution than vivtc?




In what way is the source "flawed" ?

Did you rule out source filter issues ?

Maybe post a source sample ?

[Q3CPMA]

* Source: http://0x0.st/sIzO.mkv
* ffmpeg: http://0x0.st/sIzV.mkv
* vapoursynth (vivtc mode=2): http://0x0.st/sIz9.mkv

ffmpeg does reduce judder (and produces a VFM output) compared to vs (especially visible in some pans) but it keeps some combed frames during flashes and whatnot. Maybe I should use "fieldmatch, decimate, dejudder" instead.

After looking at the original more, it looks liked mixed content, since the pan has 4 interlaced frames and 1 progressive, while the rest is classic 3:2.

[ChaosKing]

The frame rate produced by VFM is 23.976 (24000/1001) FPS hence the "judder" in 30fps scenes. I also saw some blends in the video, maybe srestore can help you there. It seems like ffmpegs dejudder produces a VFR (variable Frame Rate) so that you can combine 24 and 30 fps scenes.

[Q3CPMA]

Thanks, I still don't know what I'm supposed to do with mixed material but I'll probably stick to ffmpeg's automagic.

[Q3CPMA]

-edit-

[Myrsloik]

Thanks, I still don't know what I'm supposed to do with mixed material but I'll probably stick to ffmpeg's automagic.

If only there was a tool for shituations like these (https://forum.doom9.org/showthread.php?t=172496).

[Q3CPMA]

Thanks, it looks like what I was ready to do by hand (use the python slice tool A LOT).

[ChaosKing]

Would be too much work for me. Personally I would stick to something like this:
import havsfunc as haf

clip = core.ffms2.Source("D:\Download\sIzO.mkv")
clip = clip.vivtc.VFM(order=1, mode=4)
d = clip.std.Crop(16,16,16,16)
clip= haf.srestore(clip, frate=24000/1001, speed=-25, dclip=d)
clip.set_output()

[Q3CPMA]

Would still leave the judder that's really jarring in somes scenes. I guess my autism will serve me well.

[lansing]

This is a pure 24 fps anime, there is no hybrid content. It was just badly transferred by first converting to 30fps using blending, and then reinterlaced by some dumbass.

There is not much you can do except bob it to 60fps and then throw that into srestore and pray.

[ChaosKing]

lansing you're right, this looks much better
clip = haf.QTGMC(clip, TFF=True, Preset="slower")
d = clip.std.Crop(16,16,16,16)
clip= haf.srestore(clip, frate=24000/1001, speed=-25, dclip=d)

[Q3CPMA]

Really? That's "good" news, then. It'll make my trusty 8350 toil, instead of me.