Description

This is a simple filter that fills the borders of a clip, without changing the clip’s dimensions.

Usage

fb.FillBorders(clip clip[, int left=0, int right=0, int top=0, int bottom=0, string mode="repeat", int interlaced=0])
left, right, top, bottom

Number of pixels to fill on each side. These can be any non-negative numbers, within reason. If they are all 0, the input clip is simply passed through.

mode
“repeat”

Fills the borders using the outermost line or column.

“mirror”

Fills the borders by mirroring.

“fillmargins”

Fills the borders exactly like the Avisynth filter FillMargins, version 1.0.2.0. This mode is similar to “repeat”, except that each pixel at the top and bottom borders is filled with a weighted average of its three neighbours from the previous line.

“fixborders”

A direction “aware” modification of FillMargins. It also works on all four sides.

interlaced

Fills the top and bottom borders only with pixels taken from the same field. Possible values are 1 (always on), 0 (always off), and -1 (uses the _FieldBased frame property to decide if interlaced processing should be used or not).

On subsampled formats the borders are converted to chroma resolution by rounding up, so that a chroma sample overlapping any filled luma sample is filled too.

Compilation

Requires VapourSynth to be installed and importable by the Python that Meson finds, because the include path is queried with vapoursynth.get_include().

meson setup build
ninja -C build

To build a wheel instead:

python -m build

License

The license is WTFPL; see the LICENSE file.

Project links

Data verified by PyPI on Jul 26, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

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Credits

Author: Fredrik Mellbin

GitHub Statistics

Data verified by PyPI on Jul 26, 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

WTFPL
View SPDX License List

Requires

Python >=3.12

Tags

video borders

Classifiers

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