FLUX.3 Keyframes to Video Draft by Black Forest Labs is the fast, low-cost preview mode for keyframed video: pin up to 10 keyframe images to exact frame positions on a 24 fps timeline and generate a quick draft, with native synchronized audio, to preview the sequence before committing. When a draft lands, re-render it at full quality on FLUX.3 Keyframes to Video and it keeps the same subjects, composition and motion. Supports durations from 5 to 20 seconds in aspect ratios from 21:9 to 9:16. Ideal for staging sequences fast.