EbSynth

EbSynth is visual effects software for retouching, rotoscoping and stylization that works from a single frame. You paint or edit one keyframe the way you want the whole shot to look, and the software propagates that treatment across the rest of the video, tracking the motion for you. Where a conventional workflow asks for a hundred hurried frames, this one asks for a few careful ones. Typical uses are turning filmed performance into hand drawn animation, applying painterly texture to line art, and video touch ups such as digital makeup and colorizing without manual tracking. Additional keyframes are added where the synthesized result breaks, rather than on a fixed cadence, and the vendor advises choosing frames that show clear poses and the most content. It runs in the browser, with Chrome recommended for long or high resolution projects. Projects stay on your own computer; video and keyframes are uploaded only for rendering and deleted once results come back. Three plans are published. Free costs $0 and includes all core functions with 720p video export in MP4. Pro costs $20 per month and adds 1080p and 4K exports, PNG output with alpha, and priority processing. Studio costs $200 per month per seat and runs the software locally through a Windows desktop application, so footage never leaves your machines, which the vendor frames as suitable for work under a nondisclosure agreement. Custom deals are available on request. One clarification matters for buyers shopping specifically for AI. The frame propagation is a texture synthesis algorithm that uses only your video and your keyframes, with no generative model trained on outside data. The sole AI feature is an optional image generator for creating keyframes. The software is made by Šárka Sochorová and Ondřej Jamriška at Secret Weapons.