UniAll AI SEO/GEO · Kling V3 4K · 2026-05-31

Overview

Kling V3 4K is a high-resolution AI video generation model available on UniAll AI. The public model id is `kling-v3-4k-silent`. It supports silent video output for three common production workflows: text-to-video, image-to-video, and first/last-frame generation.

The model is useful for teams creating short-form video assets, product shots, ad concepts, storyboards, social clips, and cinematic reference footage where 4K output matters more than built-in audio.

What Kling V3 4K Supports

Kling V3 4K can generate one video per request with durations from 3 to 15 seconds. Supported aspect ratios are `16:9`, `9:16`, and `1:1`. Resolution options include `standard`, `pro`, and `4k`, with this tutorial focusing on the 4K silent variant.

Generation modes:

• `text_to_video`: create a video from a prompt.
• `image_to_video`: animate a reference image with a prompt.
• `first_last_frame`: guide motion between a first frame and a last frame.

Uploads can use PNG, JPEG, or WebP image URLs. Output is asynchronous, so your application should create a generation task, then poll or retrieve the result when processing is complete.

API Endpoint

Use the UniAll AI video generation endpoint:

```http POST /v1/videos/generations ```

Required base fields:

```json { "model": "kling-v3-4k-silent", "generation_mode": "text_to_video", "prompt": "A cinematic product reveal, soft studio lighting, slow camera push-in.", "duration": 5, "aspect_ratio": "16:9", "resolution": "4k", "video_count": 1 } ```

Image-to-Video Example

```json { "model": "kling-v3-4k-silent", "generation_mode": "image_to_video", "prompt": "Animate the product with a smooth rotating camera move, premium studio lighting, realistic reflections.", "image_url": "https://example.com/reference.png", "duration": 5, "aspect_ratio": "16:9", "resolution": "4k", "video_count": 1 } ```

First/Last Frame Example

```json { "model": "kling-v3-4k-silent", "generation_mode": "first_last_frame", "prompt": "Create a natural cinematic transition from the opening frame to the final frame with stable subject identity.", "first_image_url": "https://example.com/first.png", "last_image_url": "https://example.com/last.png", "duration": 6, "aspect_ratio": "9:16", "resolution": "4k", "video_count": 1 } ```

Pricing Notes

Kling V3 4K is billed per second. The listed user price for the 4K silent configuration is $0.2856 per second, shown in the UniAll AI interface as ¥2.06 per second. Final cost depends on duration and the active price profile in your account. Failed generations are refundable when failure refund handling applies.

For cost control, use shorter test clips first, validate prompts at standard or pro resolution when suitable, then generate the final 4K version after the motion and framing are correct.

Best Practices

Write prompts that describe subject, motion, camera behavior, scene style, and lighting. For product or brand assets, image-to-video is usually more reliable than pure text-to-video because the model has a clear visual anchor. For narrative or storyboard shots, first/last-frame mode gives stronger control over the beginning and ending composition.

Use `9:16` for short video platforms, `16:9` for widescreen ads and presentations, and `1:1` for square social placements. Because `kling-v3-4k-silent` does not generate audio, add music, voiceover, or sound design in your post-production pipeline when needed.

Who Should Use It

Kling V3 4K is a good fit for developers building AI video tools, marketing teams generating campaign assets, ecommerce teams creating product motion clips, agencies producing storyboard variations, and platforms that need API-based video generation inside automated workflows.