"Stab" doesn't work properly on some material

[BlohoJo]

I included an example... the clip jerks all over the place with the Stab filter enabled for no apparent reason. Increse the max x/y shift to 10 to see it better.

This doesn't happen with the AviSynth version of Stab.

I attached a clip that exhibits the issue (github doesn't let me attach, used zippyshare).

I also attached the script and plugins that I am using in AviSynth and Vapoursynth, just to rule out any version issues.

Clip -> https://www101.zippyshare.com/v/6IlzcOER/file.html
avisynthPlugins.zip
vsfilters.zip

[HolyWu]

The Depan filter in MVTools plugin does not support range parameter. I guess it's affected by that. You can try https://github.com/theChaosCoder/lostfunc/blob/0a6816844b8f08ecac0e7a5bb32aacae2f4a3b93/lostfunc.py#L58 which supports range parameter, but I don't know where you can download the Depan plugin since the original repo has been lost in the limbo.

[BlohoJo]

Yeah, it looks like it's not going to work without DePanEstimate.dll. What I'm not understanding, is that isn't DePan.dll and DePanEstimate.dll part of libmvtools.dll?

You can download the Depan plugin from the above "vsfilters.zip" that I posted above. It's also included in Hybrid.

The script you linked crashed; it appears to have syntax errors. I was able to get it working by changing it to:

# Stab function that uses DePanEstimate from "Depan" plugin which supports 
# the range parameter. DePanEstimate from MvTools is missing that paramater.
# Function copied from https://github.com/HomeOfVapourSynthEvolution/havsfunc
##############################################################################
# Original script by g-force converted into a stand alone script by McCauley #
# latest version from December 10, 2008                                      #
##############################################################################
def Stab(clp, range=1, dxmax=4, dymax=4, mirror=0):
    if not isinstance(clp, vs.VideoNode):
        raise vs.Error('Stab: This is not a clip')

    temp = AverageFrames(clp, weights=[1] * 15, scenechange=25 / 255)
    inter = core.std.Interleave([core.rgvs.Repair(temp, AverageFrames(clp, weights=[1] * 3, scenechange=25 / 255), mode=[1]), clp])
    mdata = core.depan.DePanEstimate(inter, range=range, trust=0, dxmax=dxmax, dymax=dymax)
    last = core.depan.DePan(inter, data=mdata, offset=-1, mirror=mirror)
    return last[::2]

It now works, and fixes the instability issues. Thanks very much for the help as I'm not a coder, the above is just me cutting and pasting lines. But it works; if range isn't specified then it defaults to 1.

[theChaosCoder]

I restored the Depan source code (hopefully it's the latest version) and the binary here: https://github.com/Vapoursynth-Plugins-Gitify/DePan
Will add it to vsrepo soon.