Concat-ID: Towards Universal Identity-Preserving Video Synthesis

Yong Zhong, Zhuoyi Yang, tengjiayan, Xiaotao Gu, chongxuan li

Concat-ID: Towards Universal Identity-Preserving Video Synthesis: 10 upvotes on Hugging Face Daily Papers, #14 of 31 papers on 2025-03-19. Day-by-day upvote history.

We present Concat-ID, a unified framework for identity-preserving video generation. Concat-ID employs Variational Autoencoders to extract image features, which are concatenated with video latents along the sequence dimension, leveraging solely 3D self-attention mechanisms without the need for additional modules. A novel cross-video pairing strategy and a multi-stage training regimen are introduced to balance identity consistency and facial editability while enhancing video naturalness. Extensive experiments demonstrate Concat-ID's superiority over existing methods in both single and multi-identity generation, as well as its seamless scalability to multi-subject scenarios, including virtual try-on and background-controllable generation. Concat-ID establishes a new benchmark for identity-preserving video synthesis, providing a versatile and scalable solution for a wide range of applications.

Paper page on Hugging Face · arXiv

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