SangNom - VapourSynth Single Field Deinterlacer

  • SangNom is a single field deinterlacer using edge-directed interpolation but nowadays it's mainly used in anti-aliasing scripts.
  • This is a rewrite version of AviSynth SangNom2, and support more formats.

Build

  • compiler with c++17 support
  • -DVS_TARGET_CPU_X86 can enable the SSE2 code path which has a large benefit on performance
./autogen.sh
./configure
make
make install

Or

meson build && cd build
ninja
  • build on linux
g++ src/sangnom.cpp -o libsangnom.dll -std=c++1y -O3 -shared -static -I/path/to/vapoursynth/headers -DVS_TARGET_CPU_X86
  • build on windows

Usage

sangnom.SangNom(src, order=1, aa=48, planes=[0, 1, 2])
  • the default setting, interpolates bottom field for all planes.
sangnom.SangNom(src, order=1, aa=[48, 0, 0], planes=[0, 1, 2])
  • this simulates the default setting of AviSynth SangNom2

Parameter

sangnom.SangNom(clip clip[, int order=1, bint dh=False, int[] aa=[48, 48, 48], int[] planes=[0, 1, 2]])
  • clip: the src clip
    • 8..16 bit integer, 32 bit float support
    • all color family support
  • order: order of deinterlacing
    • default: 1 (int)
      • 0: double frame rate, must call std.SeparateFields().std.DoubleWeave() before processing
      • 1: single frame rate, keep top field
      • 2: single frame rate, keep bottom field
  • dh: doubles the height of the input. each line of the input is copied to every other line of the output and the missing lines are interpolated.
    • default: False (bool)
      • note: if dh=True, it will force all planes to be processed.
  • aa: the strength of anti-aliasing, this value is considered in 8 bit clip
    • default: [48, 48, 48] (int[])
    • range: 0 ... 128
    • note: the value of previous plane will be used if you don't specify it.
    • note: in AviSynth SangNom2, the default is aa=[48, 0, 0]
  • planes: planes which are processed
    • default: [0, 1, 2]
      • note: if dh=True, it will force all planes to be processed.

Frame properties

  • the output is always flagged progressive (_FieldBased = 0) because every output line is either taken from or interpolated from a single field.
  • if dh=True, the _Field property is removed since the output is a full frame and no longer a separated field.

License

SangNom - VapourSynth Single Field Deinterlacer

Copyright (c) 2016 james1201
Copyright (c) 2013 Victor Efimov

This project is licensed under the MIT license. Binaries are GPL v2.

Project links

Data verified by PyPI on Jul 23, 2026
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Credits

Author: Fredrik Mellbin

GitHub Statistics

Data verified by PyPI on Jul 23, 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-2.0
View SPDX License List

Requires

Python >=3.12

Tags

video deinterlacing

Classifiers

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