vapoursynth-portable-win64
Run a portable version of vapoursynth out-of-the-box, so you can install any version of Python you like in PATH without breaking any dependencies.
Packages
You can check the list of pre-installed packages from Plugins.txt and Scripts.txt.
Usage
Download the latest release.
Unzip it and open a command window in the folder, then:
call bootstrap.bat
VSPipe.exe script.vpy --y4m - | x264 - --demuxer y4m -o output.mkv
VSPipe.exe script.vpy --y4m - | x265 - --y4m -o output.mkvAn awesome fork of VapourSynth-Editor which supports v4 API can be founded here.