Kling O1: Precision Video-to-Video Editing & Scene Consistency on playground and API | RunComfy

Model overview

• Provider: Kling
• Task: video-to-video
• Architecture: Diffusion-based video-to-video with transformer-driven temporal attention and consistency constraints
• Resolution/Specs: Reference video 3–10 s; 720p–2160p input; up to 200 MB; supports .mp4 and .mov
• Key strengths:

- Strong temporal consistency across frames

- Faithful motion transfer from the reference video (camera, pose, timing)

- Style and character continuity via Elements and reference images

- Operates at high input resolutions up to 4K

- Fast iteration on RunComfy with no cold starts

Kling O1 transforms existing footage into new cinematic scenes while preserving motion and framing. It is a multimodal vid2vid model tuned for consistent characters and styles from prompts, elements, and reference images.

How Kling O1 runs on RunComfy

RunComfy makes Kling O1 production-ready with a browser playground, a simple HTTP API. You get rapid iteration, predictable performance, and no local setup.

• Playground UI: Experience the model directly in your browser without installation.
• Playground API: Developers can integrate Kling O1 via a scalable HTTP API at API Page

Input parameters

Below are the input parameters supported by Kling O1 on RunComfy. Use @Element1, @Element2 and @Image1, @Image2 in your prompt to reference the corresponding entries by position.

Core prompts

Media references

Audio & switches

Required: prompt, video_url.

Recommended settings

Because Kling O1 is video-to-video, the reference clip drives motion and pacing. For best results:

• Use 3–8 s clips with steady or moderate camera motion to maximize style transfer and temporal stability.
• Start with 1080p input for quality/performance balance; use 4K only when necessary due to compute costs.
• Keep the cast compact: 1–3 total characters/objects in elements and 1–2 style images in image_urls. Remember elements + image_urls <= 4 when using video.
• Be explicit in prompt about the desired look (lighting, lens, mood) and reference elements/images via @ElementN/@ImageN.
• Enable keep_audio only when the original track is important; otherwise keep it off for faster processing pipelines.

Output quality and performance

• Output: MP4 video matching the input clip duration (3–10 s). Resolution typically follows the input or internal pipeline settings.
• Performance: On RunComfy with no cold starts, short 720p–1080p edits typically complete in minutes; higher resolutions or the full 10 s range will take longer. Batching and caching in the Playground help streamline iteration.

Recommended use cases

• Film and episodic: Rapid previsualization, style look-dev, and consistent character re-interpretations from plates.
• Advertising and social: Cinematic remixes of existing footage for multiple creative directions at speed.
• Game and virtual production: Narrative teasers, stylized cutscenes, and camera-matched re-stylization.
• Creator workflows: Consistent character-driven shorts derived from handheld or studio footage.

How Kling O1 compares to other models

• Kling O1 vs Runway-style vid2vid tools: Kling O1 emphasizes motion-faithful transfer from the reference video and explicit character/style continuity via elements and images; competitor tools are strong generalists but may require more manual iteration for consistent character identity.
• Kling O1 vs Stable Video Diffusion pipelines: Kling O1 is designed for direct video-to-video editing with prompt and reference alignment, while SVD is primarily image-to-video. For preserving camera and pose from existing footage, Kling O1 is typically the better fit; SVD excels when starting from a still.