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Kling 4.0 AI Video Generator
Turn a written idea, a still or reference clips into a 30-second 4K scene with the Kling 4.0 AI Video Generator — voices and visuals stay in sync.
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Kling 4.0 AI Video Generator: From Idea to Footage
Kuaishou's Kling 4.0 converts scripts, photographs and uploaded reference material into finished footage. Omni Reference processes image and voice inputs side by side, so dialogue and lip movement stay aligned whatever language you record in.
- Blend Up to 15 ReferencesStills, video clips, audio samples and character elements can be combined in one project — a single pool of 15 assets caps the whole mix.
- Language-Matched Audio in StereoDialogue hits the frame at the right moment, while two-channel output separates speakers so each voice stays easy to pick out.
- Three to Thirty Seconds Per PassOne render delivers anything from three seconds to half a minute; lengthening the story afterwards is handled as a separate step, not inside the same job.
Kling 4.0 AI Video Generator: A Three-Step Walkthrough
Go from raw reference material to a finished, checked clip in three moves — no timeline editing required.
Core Capabilities of the Kling 4.0 AI Video Generator
Longer runtimes, stacked reference inputs and language-aware audio control come together in one browser-based workspace.
Half-Minute Clips in One Render
One render covers up to 30 seconds — enough space for an opening, a turn and a payoff.
Output From 720p to 4K
Choose 720p, 1080p or 4K and match the frame to where it will live — 21:9, 16:9, 1:1, 9:16 or Auto takes you from vertical feeds to widescreen brand films.
Fifteen Reference Slots to Share
Pictures, video, audio and character elements draw from a single allowance of 15 — say 10 images, or 5 clips totalling 30 seconds, or 7 subjects.
Voice Samples Across Languages
Audio clips shape the timbre of each speaker, and picture plus stereo sound remain locked together no matter which language is spoken.
Steer Shots With 10 Keyframes
Place up to 10 still keyframes to dictate a character's appearance, the moment a scene changes and how the shot begins and ends.
Surgical Edits to Existing Footage
Adjust expressions, movement, location or grade by uploading up to 5 clips — one flagged as the main take, each 3–30 seconds, with a combined ceiling of 30 seconds.
Kling 4.0 AI Video Generator: Common Questions
Answers on clip length, output size, reference limits, editing, credits and API access.
What clip length, resolution and aspect ratio can I choose?
Renders last from three to thirty seconds and export at 720p, 1080p or 4K. HDR sits outside the resolution setting, so double-check what your delivery spec calls for.
How many reference assets fit in one project?
Fifteen assets in total, whether they are images, video, audio samples or character elements. Every category spends from that same allowance, so the figures do not add up on top of each other.
Are voice samples part of the 15-asset allowance?
Yes — audio clips are counted from the identical pool of fifteen. Sound and image remain locked in any language, so review how each spoken line sits after rendering.
What does targeted editing actually change?
Upload up to five clips and mark one as the main take. Every clip must be 3–30 seconds long and the combined footage cannot pass 30 seconds; then state which expression, movement, location or grade should shift.
Where does Kling 4.0 sit next to Kling 3.0 and Seedance 2.5?
Compare runtime, picture quality, accepted inputs and directorial control. Kling 4.0 runs to 30 seconds versus 15 for Kling 3.0, and brings 10 keyframes along with 15 reference slots.
What credits are needed, and can I call it via API?
Any Kling Motion Control credits in your balance work here, and the figure on the generate button updates as you tweak settings. Web access does not guarantee API use — confirm model IDs, input types and billing with your provider.
Give the Kling 4.0 AI Video Generator Your First Prompt
Your existing Kling Motion Control balance works here — glance at the cost before rendering, and keep a note of the prompts that gave the best results.