Disclosure: I build LoopVideo , a browser-based tool for making video loops. The ffmpeg techniques below work on their own, with or without it. This post was written with the help of AI tools. A looping video usually "jumps" at one place: where the last frame is followed by the first frame again. If those two frames don't match, viewers notice the cut on every cycle. This post walks through four ways to deal with that seam using plain ffmpeg, from the simplest to the most involved. ...