Duplyfi applies 27 named video effects across five categories: Color (saturation, contrast, brightness, vignette, gamma), Motion and Geometry (speed, zoom, rotation, flip, dimensions, random pixel size), Visual Effects (noise, pixel shift, waveform shift, blurred border, cut video, cut end video), Audio (volume adjustment, audio bitrate, spectral tilt equalizer), and Encoding (framerate, video bitrate, QP variation, metadata injection). Every parameter is randomized within a range you control, so each output file is different from every other output file. You can inspect exactly which effects are active and what their value ranges are.