DFVEdit: Conditional Delta Flow Vector for Zero-shot Video Editing

• URL: http://arxiv.org/abs/2506.20967v2
• Date: Fri, 27 Jun 2025 08:42:17 GMT
• Title: DFVEdit: Conditional Delta Flow Vector for Zero-shot Video Editing
• Abstract summary: We present DFVEdit, an efficient zero-shot video editing method tailored for Video DiTs.<n>DFVEdit eliminates the need for both attention modification and fine-tuning by directly operating on clean latents via flow transformation.<n>Building upon this foundation, we propose the Conditional Delta Flow Vector (CDFV) and integrate Implicit Cross Attention (ICA) guidance.
• Score: 18.86599058385878
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The advent of Video Diffusion Transformers (Video DiTs) marks a milestone in video generation. However, directly applying existing video editing methods to Video DiTs often incurs substantial computational overhead, due to resource-intensive attention modification or finetuning. To alleviate this problem, we present DFVEdit, an efficient zero-shot video editing method tailored for Video DiTs. DFVEdit eliminates the need for both attention modification and fine-tuning by directly operating on clean latents via flow transformation. To be more specific, we observe that editing and sampling can be unified under the continuous flow perspective. Building upon this foundation, we propose the Conditional Delta Flow Vector (CDFV) -- a theoretically unbiased estimation of DFV -- and integrate Implicit Cross Attention (ICA) guidance as well as Embedding Reinforcement (ER) to further enhance editing quality. DFVEdit excels in practical efficiency, offering at least 20x inference speed-up and 85% memory reduction on Video DiTs compared to attention-engineering-based editing methods. Extensive quantitative and qualitative experiments demonstrate that DFVEdit can be seamlessly applied to popular Video DiTs (e.g., CogVideoX and Wan2.1), attaining state-of-the-art performance on structural fidelity, spatial-temporal consistency, and editing quality.

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