A simple Python script that uses
ffmpeg as a subprocess to render ShaderToy scripts into video files. After grabbing the file from the repository, you can run it as follows:
> python shadertoy-render.py example.glsl example.mp4
Command-line arguments are documented with the
-h switch, for example:
--size— Resolution of the render window, for example
--duration— Total length of the output video in seconds, e.g.
--rate— Number of frames per second used during rendering, e.g.
--verbose— Show the full output of
ffmpegin verbose mode.
Example of more advanced usage:
> python shadertoy-render.py in.glsl out.mp4 --size=1920x1080 --rate=60 --duration=120.0
It should run on Linux and OSX where
ffmpeg is in the path, on Windows with minor changes assuming the binary is found. Python dependencies include numpy and vispy, which you can install them with PIP as follows:
> pip install numpy vispy
The output is a MP4 file with default encoding settings, which you can upload to YouTube for example. See the source code for details!
Feedback or comments are welcome; just submit a ticket or follow @alexjc on Twitter.