Kling 4.0 is the latest video model from Kling AI, and it is now one of the models you can pick in YouCam Online Editor. It is built for directed scenes: one continuous take of up to 30 seconds with stable motion, instead of short clips you have to stitch together. It also handles stereo sound with improved lip-sync, so results feel closer to a video you can post.

Instead of describing everything in words, give the model pictures. In the editor you can upload 1 to 10 images and turn on Start & End Frame to control how a shot begins and finishes. Think of your images as a storyboard: each one marks a moment that must appear, and the prompt fills in the movement between them. Use images only where the picture needs to change, because too many keyframes make a scene harder to direct.

Choose a duration from 5 seconds up to 30 seconds and pick 720p or 1080p before you generate. Start with a 5 second test to check the motion and framing, then render the longer version once you like it. Kling 4.0 also reads long prompts, so you can describe camera moves, actions and mood in detail.

Kling 4.0 is the full model for longer, more directed scenes. Kling 4.0 Flash is a faster variant meant for high-volume, everyday clips. If you are planning a scene with several beats, choose Kling 4.0. If you are testing many ideas quickly, a faster model can save time. Model options in the editor can change, so check the model list when you start.