The following information is for educational purposes. The PixDither plugin is considered abandonware; it is no longer sold or supported by the original author. No copyright infringement is intended. If the original creator requests removal, we will comply.
If you need high-quality results without a plugin, you can achieve this within After Effects: Pre-compose: Place your footage into a new composition. Posterize & Mosaic: effect to limit colors, and the effect (with "Sharp Colors" checked) to create pixelation. Dither Pattern: pixdither plugin free download high quality