Everyone can become a virtual idol! Sharing a popular AI character replacement tool and useful prompt tips

AI character replacement videos have significantly lowered the barrier; tools like Kling enable creators to complete high-quality transformations, voice-overs, and stylized images directly in the browser, rapidly decentralizing content creation power.

Recently, AI character replacement videos have been trending wildly on social media, impressing everyone with their facial detail and smooth body movements, making us wonder what in the internet can still be considered real. In the past, “Video-to-Video” technology like this often required high-end computers and complex coding, but now, simply opening a browser and using many affordable or even free tools on the market makes it easy to achieve.

This article is based on the highly popular AI character replacement tutorial guide on X, which has garnered up to 1.7 million views, introducing the most powerful AI video generation and recommendation models, as well as key prompt techniques. Feel free to try.

Kling 2.6: 4 Steps to Create the Perfect AI Transformation Video

Currently, Kling is undoubtedly the leader in the AI character replacement field. Especially with its latest version, Kling 2.6, which supports reference videos up to 30 seconds long and can handle quite complex body movements. Kling’s greatest strength lies in its “Motion Control,” allowing AI-generated characters to perfectly replicate the movement details from the reference video. To produce high-quality videos with Kling, follow these steps:

1. Find high-quality reference material: A clear video featuring a single character, preferably showing the upper body or full body. Sources can be your own recordings or suitable clips from YouTube, TikTok, etc.
2. Generate the initial image with AI: This is the most critical step. Capture the first frame of the reference video and input it into image generation tools (such as Nano Banana Pro or Flux 2 models on the Krea platform). Use prompts to modify the character or background as desired, but be sure to keep the original pose and composition. Example prompt: “Replace the man in the picture with a cyberpunk-style woman, maintaining the same pose.”
3. Upload to Kling for synthesis: Upload the reference video and the newly generated initial image to Kling’s official website. Usually, no additional prompts are needed, but be sure to check “Character orientation matches video” to ensure movement continuity.
4. Post-processing with ElevenLabs: Kling will retain the original video’s sound. If you change the character’s gender or age, you can use ElevenLabs’ voice changer to replace the voice while preserving the original tone and rhythm, matching the new character.

Advanced users: Wan 2.2 Animate’s dual-mode application techniques

Besides Kling, Wan 2.2 Animate is also a model worth paying attention to. Although released earlier, it still has strong capabilities in character replacement. When using Wan 2.2, avoid background clutter in the initial image, as this greatly affects video quality. It offers two core modes, suitable for different creative needs:

• Move Mode: Applies the character’s movements to a completely new scene (ideal when changing both character and background).
• Replace Mode: Only replaces the character in the video, keeping the original background and scene.

Stylized creation favorites: Luma Ray 3 and Runway Gen-4

If you have more diverse editing needs, Luma Ray 3 (using the Modify feature) and Runway Gen-4 (using the Aleph feature) are also good options. However, these models generally have lower lip-sync accuracy compared to Kling and Wan, and video length limits are stricter—for example, Luma is 10 seconds, and Runway is only 5 seconds.

Nevertheless, if you don’t need extensive character dialogue and want to create short, visually striking videos with strong styles (such as turning real footage into anime), these models offer excellent creative space and can even produce surreal visual experiences.

AI Is About to Trigger a Content Creation Revolution

The emergence of these AI tools signals an explosion of a cinematic revolution. Scenes that previously required Hollywood-level special effects teams, millions in budget, and professional green screens can now be created by a single creative person with just a browser. This means storytelling power is being decentralized; in the future, the key to a work’s success will no longer be capital but innovative ideas and extraordinary imagination.

• This article is reprinted with permission from：《Chain News》
• Original title: 《Everyone Can Be a Virtual Idol! Revealing the Popular AI Character Replacement Models, Even Voice Can Be Perfectly Replicated》
• Original author: Co2