FLUX.3 Edit Video from Black Forest Labs re-renders an existing clip from a single text instruction. Describe only the change, such as night relighting, a new environment, a replaced character, new weather or a full style transfer, and everything you leave out stays as filmed: camera, timing, framing and source audio. Works on MP4 clips under 15 seconds and 50 MB, with 720p output. Ideal for VFX previz, ad localization, seasonal variants, turning animation into live action and fast creative iterations on shot footage.