GoKawiil4K video upscaling explained: interpolation vs AI-based methods
Converting standard footage to 4K resolution requires generating new pixels to fill a larger frame, and there are two main approaches: traditional interpolation, which calculates new pixel values based on surrounding color and brightness data, and AI upscaling, which uses models trained on low- and high-resolution image pairs to predict sharper detail. Older interlaced footage adds another wrinkle, since it must be de-interlaced before either upscaling method can be applied properly.