MobileI2V: Fast and High-Resolution Image-to-Video on Mobile Devices

• URL: http://arxiv.org/abs/2511.21475v1
• Date: Wed, 26 Nov 2025 15:09:02 GMT
• Title: MobileI2V: Fast and High-Resolution Image-to-Video on Mobile Devices
• Authors: Shuai Zhang, Bao Tang, Siyuan Yu, Yueting Zhu, Jingfeng Yao, Ya Zou, Shanglin Yuan, Li Yu, Wenyu Liu, Xinggang Wang,
• Abstract summary: We propose MobileI2V, a 270M lightweight diffusion model for real-time image-to-video generation on mobile devices.<n>We design a time-step distillation strategy that compresses the I2V sampling steps from more than 20 to only two without significant quality loss.<n>MobileI2V enables, for the first time, fast 720p image-to-video generation on mobile devices, with quality comparable to existing models.
• Score: 42.00270347221752
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recently, video generation has witnessed rapid advancements, drawing increasing attention to image-to-video (I2V) synthesis on mobile devices. However, the substantial computational complexity and slow generation speed of diffusion models pose significant challenges for real-time, high-resolution video generation on resource-constrained mobile devices. In this work, we propose MobileI2V, a 270M lightweight diffusion model for real-time image-to-video generation on mobile devices. The core lies in: (1) We analyzed the performance of linear attention modules and softmax attention modules on mobile devices, and proposed a linear hybrid architecture denoiser that balances generation efficiency and quality. (2) We design a time-step distillation strategy that compresses the I2V sampling steps from more than 20 to only two without significant quality loss, resulting in a 10-fold increase in generation speed. (3) We apply mobile-specific attention optimizations that yield a 2-fold speed-up for attention operations during on-device inference. MobileI2V enables, for the first time, fast 720p image-to-video generation on mobile devices, with quality comparable to existing models. Under one-step conditions, the generation speed of each frame of 720p video is less than 100 ms. Our code is available at: https://github.com/hustvl/MobileI2V.

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