sync/lipsync/v2/pro
Create lifelike talking visuals with AI that matches voice and motion seamlessly.
Precise lip-sync alignment from arbitrary speech audio
Natural facial expression and head motion modeling
Strong identity preservation from a single reference portrait
Temporal consistency across frames for stable, flicker-free output
Fast generation suitable for production pipelines
Kling Avatar V2 converts a single portrait and an audio clip into a lifelike talking-head video with professional realism. It leverages modern audio-to-visual alignment and neural rendering techniques to deliver HD motion and stable temporal consistency.
RunComfy provides a zero-setup path to production for Kling Avatar with scalable APIs, and a developer-friendly playground. You get consistent performance, no environment drift, and frictionless iteration from prototype to deployment.
The Kling Avatar image-to-video pipeline accepts a portrait image, an audio file, and an optional prompt for style or behavior hints. Grouped parameter reference follows.
Core media inputs
| Parameter | Type | Default/Range | Description |
|---|---|---|---|
| image_url | string (image_uri) | "" | Required. Publicly accessible URL to the portrait image that will become the avatar. Use a clear, front-facing head-and-shoulders image (PNG/JPEG). Ensure the URL is reachable by the service (no auth prompts; signed URLs must remain valid for the job duration). |
| audio_url | string (audio_uri) | "" | Required. Publicly accessible URL to the speech audio that drives lip-sync and motion (e.g., WAV/MP3). Use clean, noise-free audio for best results. Duration of the output video follows the audio length. |
Prompting and control
| Parameter | Type | Default/Range | Description |
|---|---|---|---|
| prompt | string | "." | Optional text hints to guide Kling Avatar's motion or subtle styling (e.g., "slight head nods," "neutral expression," "news anchor tone"). Keep as "." if no guidance is needed. |
Note: You can also try the Kling AI Avatar V2 Pro playground for image-to-video by using pro model.
Create lifelike talking visuals with AI that matches voice and motion seamlessly.
Empowers precise tracking and seamless object edits across video scenes.
Make fast, realistic videos from text or images at a low cost.
Refined AI visuals, real-time control, and pro FX for creators
Transform scripts or voices into dynamic, brand-tailored avatar videos fast.
Animate an image into a smooth 6s video with Hailuo 02 Pro.
Use of Kling Avatar image-to-video content for commercial projects depends on Kuaishou Technology’s specific licensing. The model typically follows a Non-Commercial or OpenRAIL-type license, meaning that while RunComfy provides access, users must still comply with the original Kling Avatar commercial rights policy. Running it through RunComfy does not override those original license conditions, so always review the terms on KlingAvatar.com or Kuaishou’s official portal before monetizing any generated content.
Kling Avatar image-to-video is currently capped at resolutions up to 1080p, supports aspect ratios between 1:1 and 16:9, and usually limits video duration to about one minute. Prompt inputs and text tokens have internal length constraints, and a maximum of several reference images (used for multi-image consistency) can be provided per generation. These design limits ensure stable rendering and predictable GPU performance on RunComfy.
To migrate Kling Avatar image-to-video workflows from the Playground to production, developers can connect via the RunComfy API. The API mirrors Playground settings, allowing automated input submission (image/audio), asynchronous job polling, and retrieval of generated MP4s. Begin by developing and tuning in the Playground, then obtain an API key and update your workflow endpoints for scalable deployment.
Kling Avatar image-to-video, particularly in its 2.5 Turbo iteration, offers superior lip-audio alignment, emotional expression control, and motion fluidity compared to earlier or competing avatar generators. Its multi-image feature preserves subject identity and ensures consistent visuals across sequences, while maintaining generation speed and cost efficiency. This balance of quality and real-time production capability makes it stand out among current AI avatar models.
Yes. RunComfy offers trial credits (usd) that allow users to explore Kling Avatar image-to-video generation without immediate purchase. Once credits are consumed, continuing production use requires purchasing additional usd. This pay-as-you-go model makes it simple to experiment before fully integrating the Kling Avatar pipeline into commercial or creative applications.
Kling Avatar image-to-video supports input formats like PNG, JPEG, WebP, GIF, and AVIF, while audio inputs can include MP3, WAV, OGG, M4A, and AAC. The generated outputs are standardized to MP4 for compatibility with common platforms such as YouTube, TikTok, and other social channels. These formats ensure smooth playback and broad accessibility across workflows.
If you encounter issues or need guidance with Kling Avatar image-to-video use on RunComfy—whether through the Playground or API integration—you can reach the support team directly at hi@runcomfy.com. The support staff can help troubleshoot model-specific behaviors, credit usage, or integration workflows while guiding you toward compliance with the model’s official licensing terms.
RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.