Kling 4.0 turns prompts, reference images, reference videos, and keyframes into connected AI video clips for product ads, short films, music visuals, and social clips. It keeps the same character, product, and style across shots, with multi-shot reference control, key-moment planning, duration and resolution up to 30 seconds at 1080p, voice references, multilingual lip sync with stereo audio, and editing for creative recreation. See https://kling40ai.com.