EbSynth

EbSynth is a specialized VFX tool that lets you transform videos by editing just a few keyframes. You paint or edit one or more frames from your video (like adding digital makeup, changing colors, or converting to cartoon style), and the software automatically applies those changes to the rest of the video using a texture-synthesis algorithm. It handles the tedious work of tracking objects and movements across frames, saving you hours of manual rotoscoping.

The tool works by analyzing optical flow from your source video to propagate your keyframe edits throughout the entire timeline. While it's not AI-based in its core function (it uses a dedicated algorithm rather than generative models), it does offer an optional AI feature to generate keyframes. What makes it stand out is its focus on artistic control — you provide the creative direction through keyframes, and EbSynth handles the technical execution across hundreds or thousands of frames.

EbSynth is perfect for animators, digital artists, and video editors who want to create hand-drawn animation from live footage, apply consistent visual effects, or perform detailed retouching work. Real-world uses include converting performance videos into animated sequences, applying digital makeup in post-production, colorizing black-and-white footage, and creating stylized visual effects without complex tracking software.