Replace Anyone in Videos

• URL: http://arxiv.org/abs/2409.19911v2
• Date: Wed, 07 May 2025 06:40:11 GMT
• Title: Replace Anyone in Videos
• Authors: Xiang Wang, Shiwei Zhang, Haonan Qiu, Ruihang Chu, Zekun Li, Yingya Zhang, Changxin Gao, Yuehuan Wang, Chunhua Shen, Nong Sang,
• Abstract summary: We present the ReplaceAnyone framework, which focuses on localized human replacement and insertion featuring intricate backgrounds.<n>We formulate this task as an image-conditioned video inpainting paradigm with pose guidance, utilizing a unified end-to-end video diffusion architecture.<n>The proposed ReplaceAnyone can be seamlessly applied not only to traditional 3D-UNet base models but also to DiT-based video models such as Wan2.1.
• Score: 82.37852750357331
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The field of controllable human-centric video generation has witnessed remarkable progress, particularly with the advent of diffusion models. However, achieving precise and localized control over human motion in videos, such as replacing or inserting individuals while preserving desired motion patterns, still remains a formidable challenge. In this work, we present the ReplaceAnyone framework, which focuses on localized human replacement and insertion featuring intricate backgrounds. Specifically, we formulate this task as an image-conditioned video inpainting paradigm with pose guidance, utilizing a unified end-to-end video diffusion architecture that facilitates image-conditioned video inpainting within masked regions. To prevent shape leakage and enable granular local control, we introduce diverse mask forms involving both regular and irregular shapes. Furthermore, we implement an enriched visual guidance mechanism to enhance appearance alignment, a hybrid inpainting encoder to further preserve the detailed background information in the masked video, and a two-phase optimization methodology to simplify the training difficulty. ReplaceAnyone enables seamless replacement or insertion of characters while maintaining the desired pose motion and reference appearance within a single framework. Extensive experimental results demonstrate the effectiveness of our method in generating realistic and coherent video content. The proposed ReplaceAnyone can be seamlessly applied not only to traditional 3D-UNet base models but also to DiT-based video models such as Wan2.1. The code will be available at https://github.com/ali-vilab/UniAnimate-DiT.

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