How do you make sure the replaced person looks natural?

Mobbi uses intelligent composition alignment to carefully analyze the original subject's position, size, lighting, shadows, and camera angle. The newly generated person is matched precisely to those parameters. It also preserves all scene details and uses advanced motion transfer to keep movements smooth and natural, avoiding stiffness or visual inconsistency.

What video formats and lengths are supported?

Mobbi supports common mp4 and mov formats, including videos recorded on iOS devices, and automatically handles format conversion. The output video keeps the same duration, aspect ratio, and frame rate as the original, so all core characteristics are faithfully preserved.

What if I'm not happy with the generated result?

After generating the replacement frames, Mobbi first shows you a preview for confirmation. If you're not satisfied, you can request specific adjustments, such as changing the subject's position or modifying lighting effects, and the system will regenerate based on your feedback. We also offer multiple generation model options, so you can switch AI engines to get results that better match your expectations.

What are the best use cases for video face swap technology?

This works best for creative content production, custom marketing assets, film previsualization, and similar use cases. It's especially useful when you need personalized video content quickly or want to test different character options before a full shoot. Please use it responsibly and legally, and respect others' portrait and privacy rights.

AI 视频人物替换

保留原视频的场景、动作与镜头运动，智能替换视频中的人物，让任何人都能成为你的视频主角

免费试用

使用流程

只需 3 步即可完成。

01 / 03
Upload the Video and Reference Image
Upload the original video with the person you want to replace, along with a reference photo of the target person. Mobbi will automatically analyze the video content and find the best transition timing.
02 / 03
Generate Replacement Frames Intelligently
Mobbi accurately extracts key frames and seamlessly blends the person from the reference image into the original scene, while preserving composition, lighting, and shooting texture.
03 / 03
Transfer Motion and Export the Final Video
Using AI motion transfer, the new person faithfully reproduces all actions, expressions, and camera movement from the original video, generating the final video in one click.

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Yes. Mobbi fully preserves the original video's audio track, including background music, ambient sound, and speech. The replacement process only changes the person shown on screen and does not affect any audio, ensuring the video remains complete and seamless.