RetroDither, developed by BGRA Entertainment, uses dithering and color schemes to re-create the look of 1980s home computers and video games. It runs as a GPU-accelerated plugin for Adobe After Effects and also supports Premiere Pro, applying stylized images built from the palettes and dithering patterns of retro game consoles and home computer platforms.
The plugin ships with 20 color palettes, including C-64 and Apple II. Its adaptive palettes work similarly to Photoshop's Save for Web dialog, while the hardware-named palettes such as CGA, ZX Spectrum and C64 mimic the limitations of the original machines. Twelve dithering methods cover both error diffusion — Floyd-Steinberg, Jarvis-Judice, Stucki, Atkinson, Burkes, Siera and Stevenson-Arce — and ordered dithering using a Bayer matrix.
Additional controls include 0 to 8x downscaling for a more stylized result, a threshold slider that alters Bayer dithering and manages 1-bit palette mapping, and a grayscale conversion applied before the palette so shades of gray map to the output palette's colors. A serpentine scan option changes how the non-Bayer algorithms render. The whole effect is fully GPU accelerated.