🤖 AI Summary
Existing video customization methods rely on reference images or task-specific temporal priors, which struggle to fully exploit the intrinsic spatiotemporal information in videos, thereby limiting generation flexibility and generalization. This work proposes OmniTransfer, a unified framework that enhances appearance consistency through multi-view inter-frame information and integrates temporal cues for fine-grained temporal control. OmniTransfer introduces three key mechanisms: task-aware positional bias, reference-decoupled causal learning, and task-adaptive multimodal alignment. Notably, it achieves high-quality motion transfer without requiring pose annotations—a first in the field—and unifies support for diverse video transfer tasks. Experiments demonstrate that OmniTransfer outperforms existing approaches in identity and style transfer as well as camera motion and visual effect generation, while matching pose-based models in motion transfer fidelity, enabling highly realistic and flexible video synthesis.
📝 Abstract
Videos convey richer information than images or text, capturing both spatial and temporal dynamics. However, most existing video customization methods rely on reference images or task-specific temporal priors, failing to fully exploit the rich spatio-temporal information inherent in videos, thereby limiting flexibility and generalization in video generation. To address these limitations, we propose OmniTransfer, a unified framework for spatio-temporal video transfer. It leverages multi-view information across frames to enhance appearance consistency and exploits temporal cues to enable fine-grained temporal control. To unify various video transfer tasks, OmniTransfer incorporates three key designs: Task-aware Positional Bias that adaptively leverages reference video information to improve temporal alignment or appearance consistency; Reference-decoupled Causal Learning separating reference and target branches to enable precise reference transfer while improving efficiency; and Task-adaptive Multimodal Alignment using multimodal semantic guidance to dynamically distinguish and tackle different tasks. Extensive experiments show that OmniTransfer outperforms existing methods in appearance (ID and style) and temporal transfer (camera movement and video effects), while matching pose-guided methods in motion transfer without using pose, establishing a new paradigm for flexible, high-fidelity video generation.