Deoldify Vapoursynth filter

[Dan64]

Actually I developed a version of ProPainter with the parameter "sc_on_region", in the case this parameter is True, the SCDetect will be applied only on the mask_region.
In this case the sc_threshold need to be set to a lower value, because usually the logo will cover most of mask region and the change in the mask_region are less than on full image.

I decided to don't deliver it becasuse on my tests this version was slower.

If you are interested in testing it I can provide you this version.

Dan

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HAVC_deepex:

:param sc_framedir:         if set, define the directory where are stored the reference frames. If only_ref_frames=True,
                                and method=0 this directory will be written with the reference frames used by the filter.
                                if method!=0 the directory will be read to create the reference frames that will be used
                                by "Deep-Exemplar-based Video Colorization".

:param sc_framedir:         If set, define the directory where the reference frames are stored.
                                The reference frame name must be in the format: ref_nnnnnn.[jpg|png|jpeg], for example
                                the reference frame 897 must be named: ref_000897.[jpg|png|jpeg]

=> should this be one text?

I will release a new RC version with this comment fixed and a change in a parameter name, which will allow to control another interesting feature, that I'm still testing.
Dan