Seedance 1.5 pro: A Native Audio-Visual Joint Generation Foundation Model
Abstract
Recent strides in video generation have paved the way for unified audio-visual generation. In this work, we present Seedance 1.5 pro, a foundational model engineered specifically for native, joint audio-video generation. Leveraging a dual-branch Diffusion Transformer architecture, the model integrates a cross-modal joint module with a specialized multi-stage data pipeline, achieving exceptional audio-visual synchronization and superior generation quality. To ensure practical utility, we implement meticulous post-training optimizations, including Supervised Fine-Tuning (SFT) on high-quality datasets and Reinforcement Learning from Human Feedback (RLHF) with multi-dimensional reward models. Furthermore, we introduce an acceleration framework that boosts inference speed by over 10X. Seedance 1.5 pro distinguishes itself through precise multilingual and dialect lip-syncing, dynamic cinematic camera control, and enhanced narrative coherence, positioning it as a robust engine for professional-grade content creation. Seedance 1.5 pro is now accessible on Volcano Engine at https://console.volcengine.com/ark/region:ark+cn-beijing/experience/vision?type=GenVideo.
Keywords
Cite
@article{arxiv.2512.13507,
title = {Seedance 1.5 pro: A Native Audio-Visual Joint Generation Foundation Model},
author = {Team Seedance and Heyi Chen and Siyan Chen and Xin Chen and Yanfei Chen and Ying Chen and Zhuo Chen and Feng Cheng and Tianheng Cheng and Xinqi Cheng and Xuyan Chi and Jian Cong and Jing Cui and Qinpeng Cui and Qide Dong and Junliang Fan and Jing Fang and Zetao Fang and Chengjian Feng and Han Feng and Mingyuan Gao and Yu Gao and Dong Guo and Qiushan Guo and Boyang Hao and Qingkai Hao and Bibo He and Qian He and Tuyen Hoang and Ruoqing Hu and Xi Hu and Weilin Huang and Zhaoyang Huang and Zhongyi Huang and Donglei Ji and Siqi Jiang and Wei Jiang and Yunpu Jiang and Zhuo Jiang and Ashley Kim and Jianan Kong and Zhichao Lai and Shanshan Lao and Yichong Leng and Ai Li and Feiya Li and Gen Li and Huixia Li and JiaShi Li and Liang Li and Ming Li and Shanshan Li and Tao Li and Xian Li and Xiaojie Li and Xiaoyang Li and Xingxing Li and Yameng Li and Yifu Li and Yiying Li and Chao Liang and Han Liang and Jianzhong Liang and Ying Liang and Zhiqiang Liang and Wang Liao and Yalin Liao and Heng Lin and Kengyu Lin and Shanchuan Lin and Xi Lin and Zhijie Lin and Feng Ling and Fangfang Liu and Gaohong Liu and Jiawei Liu and Jie Liu and Jihao Liu and Shouda Liu and Shu Liu and Sichao Liu and Songwei Liu and Xin Liu and Xue Liu and Yibo Liu and Zikun Liu and Zuxi Liu and Junlin Lyu and Lecheng Lyu and Qian Lyu and Han Mu and Xiaonan Nie and Jingzhe Ning and Xitong Pan and Yanghua Peng and Lianke Qin and Xueqiong Qu and Yuxi Ren and Kai Shen and Guang Shi and Lei Shi and Yan Song and Yinglong Song and Fan Sun and Li Sun and Renfei Sun and Yan Sun and Zeyu Sun and Wenjing Tang and Yaxue Tang and Zirui Tao and Feng Wang and Furui Wang and Jinran Wang and Junkai Wang and Ke Wang and Kexin Wang and Qingyi Wang and Rui Wang and Sen Wang and Shuai Wang and Tingru Wang and Weichen Wang and Xin Wang and Yanhui Wang and Yue Wang and Yuping Wang and Yuxuan Wang and Ziyu Wang and Guoqiang Wei and Wanru Wei and Di Wu and Guohong Wu and Hanjie Wu and Jian Wu and Jie Wu and Ruolan Wu and Xinglong Wu and Yonghui Wu and Ruiqi Xia and Liang Xiang and Fei Xiao and XueFeng Xiao and Pan Xie and Shuangyi Xie and Shuang Xu and Jinlan Xue and Shen Yan and Bangbang Yang and Ceyuan Yang and Jiaqi Yang and Runkai Yang and Tao Yang and Yang Yang and Yihang Yang and ZhiXian Yang and Ziyan Yang and Songting Yao and Yifan Yao and Zilyu Ye and Bowen Yu and Jian Yu and Chujie Yuan and Linxiao Yuan and Sichun Zeng and Weihong Zeng and Xuejiao Zeng and Yan Zeng and Chuntao Zhang and Heng Zhang and Jingjie Zhang and Kuo Zhang and Liang Zhang and Liying Zhang and Manlin Zhang and Ting Zhang and Weida Zhang and Xiaohe Zhang and Xinyan Zhang and Yan Zhang and Yuan Zhang and Zixiang Zhang and Fengxuan Zhao and Huating Zhao and Yang Zhao and Hao Zheng and Jianbin Zheng and Xiaozheng Zheng and Yangyang Zheng and Yijie Zheng and Jiexin Zhou and Jiahui Zhu and Kuan Zhu and Shenhan Zhu and Wenjia Zhu and Benhui Zou and Feilong Zuo},
journal= {arXiv preprint arXiv:2512.13507},
year = {2025}
}
Comments
Seedance 1.5 pro Technical Report