Inverse Painting is a diffusion model-based method that generates time-lapse videos of the painting process from a target artwork. This technique learns from the painting processes of real artists through training, capable of handling various artistic styles and creating videos that resemble the painting process of human artists. It integrates text and region understanding, defining a set of painting instructions, and utilizes a novel diffusion-based renderer to update the canvas. The technology not only manages a limited range of acrylic painting styles during training but also provides reasonable results across a broad spectrum of artistic styles and genres.