vapoursynth-mvuscale

A tiny native VapourSynth (API4) filter that scales mvutensils motion vectors between resolutions — the manipmv.ScaleVect replacement used by the smdegrain-bis UHDhalf path, where motion is searched at half resolution and the vectors are multiplied back up to full resolution before Degrain.

It registers core.mvuscale.ScaleVect(clip, scale=<int>), operating on mvutensils' vector frame-props (geometry ×s, packed vectors ×s, SAD ×s²). It links no libpython and no libvapoursynth, so one build per platform serves every Python 3.x.

Install

pip install vapoursynth-mvuscale      # drops the plugin under vapoursynth/plugins/mvuscale/

smdegrain-bis loads it automatically when UHDhalf=True. A host that manages its own plugin directory can instead relocate the wheel payload (or the native/build.sh output) into that directory, where it autoloads.

Build from source

pip wheel native/ -w dist/            # scikit-build-core + CMake
# or, just the .so:
CXX=g++ bash native/build.sh          # -> tests/_plugins/mvuscale/libmvuscale.so

The VapourSynth API4 headers are vendored under native/include/ (see its NOTICE), so no VapourSynth SDK is required to build.

Licence: GPL-3.0-or-later.

Project links

Data verified by PyPI on Jul 17, 2026
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1 maintainer

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Avatar for FloGamper from gravatar.com FloGamper

Credits

Author: Florian Gamper

GitHub Statistics

Data verified by PyPI on Jul 17, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

GPL-3.0-or-later
View SPDX License List

Requires

Python >=3.8

Tags

vapoursynth mvutensils motion-vectors denoise smdegrain

Classifiers

Report project as malware

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vapoursynth_mvuscale-0.3.1.tar.gz (16.0 kB view details)

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Release history Release notifications | RSS feed

This release

0.3.1 This release

9 files

0.3.0

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0.2.0

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0.1.3

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0.1.2

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0.1.1

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0.1.0

9 files

Pre-release

0.1.0rc2

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