* Create an empty Vapoursynth folder.
* Download portable Python (3.12)
https://www.python.org/ftp/python/3.12.9/python-3.12.9-embed-amd64.zip
* Download portable Vapoursynth
https://github.com/vapoursynth/vapoursynth/releases/download/R70/VapourSynth64-Portable-R70.zip
* Extract Python and then Vapoursynth into the Vapoursynth folder
* Change the content of the python312._pth to
  ```
  Scripts
  Lib\site-packages
  python312.zip
  .

  # Uncomment to run site.main() automatically
  #import site
  ```
* Install pip
 * Download the pip installer
   https://bootstrap.pypa.io/get-pip.py and move it into your Vapoursynth folder
 * Open a terminal inside the Vapoursynth and call  'python get-pip.py'

* Integrate Vapoursynth to the environment by calling 'python -m pip install wheel/VapourSynth-70-cp312-cp312-win_amd64.whl'

* Install torch
  ```
  python -m pip install -U packaging setuptools wheel
  python -m pip install --pre torch torchvision --index-url https://download.pytorch.org/whl/nightly/cu128
  python -m pip install opencv-contrib-python
  python -m pip install --pre -U torch_tensorrt --index-url https://download.pytorch.org/whl/nightly/cu128
  python -m pip install tensorrt
  ```