Kling 4.0 Flash Video Generator
Kling 4.0 Flash Video Generator converts your script or still into 4K clips of up to 30 seconds, backed by 15 Omni Reference slots and synced voices.
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The Kling 4.0 Flash Video Generator Explained in Plain Terms
Feed Kling 4.0 Flash Video Generator a written line or a single still, and clips of three to thirty seconds come back with speech matched to the action in any language.
- Kling 4.0: The Kuaishou Video ModelDeveloped by Kuaishou, this engine reads written prompts, still frames and reference media, and follows on from the earlier Kling 3.0 and Kling 3.0 Turbo releases.
- One Pass, Three to Thirty Seconds, Up to 4KEach run hands back a clip between three seconds and half a minute long, at 720p, 1080p or 4K, shaped by up to 10 keyframes and 15 Omni Reference inputs.
- A Single Omni Reference Flow for Pictures and VoicesVisual assets and voice samples sit in the same workspace under Omni Reference, which keeps dialogue in any language aligned with the on-screen action.
Three Simple Steps With Kling 4.0 Flash Video Generator
Bring in your assets, describe the moment you want, and review the first pass before extending the story.
What You Get With Kling 4.0 Flash Video Generator
Half-minute scenes, a single shared pool of reference assets, and speech that keeps pace with every frame.
Scenes That Run to 30 Seconds
One run holds a complete beat — the setup, the central action and the payoff. If the story needs more room, carry it forward through the extension flow rather than squeezing the idea.
Output That Reaches 4K
Choose 720p, 1080p or 4K, then frame for wherever it will play — 21:9, 16:9, 1:1, 9:16 or Auto, whether that means a tall social edit or a wide product spot.
A Shared Ceiling of 15 Reference Assets
Stills, footage, voice clips and subject elements all come out of the same allowance of 15. Inside that budget you may use up to 10 images, 5 clips totalling 30 seconds, or 7 subject elements.
Voices and Audio Across Languages
Assign a voice sample to every speaker and the render comes back in two-channel stereo, with speech aligned to the picture no matter which language is used.
Steer as Many as 10 Keyframes
Pin down the beats that matter — a shift in expression, a turn in the action, the opening and closing frames — using up to 10 stills across a three-to-thirty-second run.
Editing Aimed at Specific Details
Supply up to 5 clips with one marked as primary to rework a face, a gesture, a background or an overall look. Each clip spans 3 to 30 seconds and the combined length stays under 30.
Kling 4.0 Flash Video Generator: Common Questions
What the model can do, how the input limits add up, and what to check before you send a job.
How long can a single Kling 4.0 Flash Video Generator run be?
One pass stretches from three seconds to thirty. Beyond that you are in extension territory, so check which continuation options your plan includes instead of treating a longer sequence as one run.
How do the reference limits add up?
Everything shares one budget of fifteen. Images max out at 10, footage at 5 clips that together last 30 seconds, subject elements at 7 — and each of those draws from the same fifteen instead of adding to it.
Will voice references handle dialogue in other languages?
Yes. A voice sample shapes how a subject sounds, uses one of the fifteen available slots, and works together with cross-language lip and audio matching. Play the render back to confirm where each line lands.
Can Kling 4.0 Flash Video Generator rework footage I already own?
It can. You may bring in as many as 5 clips with one flagged as primary, and every clip must fall between three and thirty seconds. Their combined length still has to stay inside the thirty-second cap.
What is the maximum number of keyframe images?
Ten. Place them at the moments that matter — a pose, a change in the scene, a shift in expression — and keep the subject and the lighting consistent from one frame to the next.
Where can I check the credit cost?
This generator draws on the Kling Motion Control credits sitting in your account. The amount shows on the Generate button and updates whenever you change a setting, so review it before you commit.
Start Your First Clip With Kling 4.0 Flash Video Generator
Head to the panel above, drop in your references, and review the credit cost and usage terms shown before you export the finished clip.