Try Kling 4.0: create 30s videos in one pass at 4K/1080p, with stereo audio, precise lip sync and up to 15 reference assets. Available on site.

Kling 4.0 is an AI video generator made for one continuous shot. You write the prompt, attach references, and render up to 30 seconds instead of gluing short clips together.

Export can be 4K or 1080p. Stereo audio stays in the same file as the picture, so a voice and a music bed can sit in the left and right channels.

Lip sync follows the spoken line. A presenter, a character, or an explainer host keeps mouth movement lined up with the voice for the full length of the shot.

You can add up to 15 reference assets. Use them to hold a person, a product, a logo, a palette, or a place so the subject does not drift from frame to frame.

That fits launch films, social ads, training snippets, and storyboard tests. One project carries the idea, the look, and the sound.

Open a project, set the length, pick 4K or 1080p, and add only the references you need. Fifteen is the upper limit, not a quota.

Teams that currently cut five-second bursts can ask for one pass and review a single file. The generator is available on the site today.

A practical workflow is simple. Describe the scene, choose who is speaking, and decide whether the frame should be wide or close. Then render the full half minute once and keep the take that matches the brief.

Because the audio is stereo, dialogue can sit apart from the bed. Because lip sync is precise, you spend less time fixing a mouth that lags the line. Because the length is thirty seconds, the piece can hold a beginning, a point, and an ending.

The public page for this tool is the only external link in this story: https://kling4.tv/ .