Phantom: Subject-Consistent Video Generation via Cross-Modal Alignment
Lijie Liu, Tianxiang Ma, Bingchuan Li, Zhuowei Chen, Jiawei Liu, Gen Li, Siyu Zhou, Qian He
Abstract
The continuous development of foundational models for video generation is evolving into various applications, with subject-consistent video generation still in the exploratory stage. We refer to this as Subject-to-Video, which extracts subject elements from reference images and generates subject-consistent videos following textual instructions. We believe that the essence of subject-to-video lies in balancing the dual-modal prompts of text and image, thereby deeply and simultaneously aligning both text and visual content. To this end, we propose Phantom, a unified video generation framework for both single- and multi-subject references.Building on existing text-to-video and image-to-video architectures, we redesign the joint text-image injection model and drive it to learn cross-modal alignment via text-image-video triplet data. The proposed method achieves perfect subject-consistent video generation while addressing issues of image content leakage and multi-subject confusion.Evaluation results indicate that our method outperforms other state-of-the-art closed-source commercial solutions.In particular, we emphasize subject consistency in human generation, covering existing ID-preserving video generation while offering enhanced advantages.
BibTeX
@InProceedings{Liu_2025_ICCV,
author = {Liu, Lijie and Ma, Tianxiang and Li, Bingchuan and Chen, Zhuowei and Liu, Jiawei and Li, Gen and Zhou, Siyu and He, Qian and Wu, Xinglong},
title = {Phantom: Subject-Consistent Video Generation via Cross-Modal Alignment},
booktitle = {Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
month = {October},
year = {2025},
pages = {14951-14961}
}