BroadWay: Boost Your Text-to-Video Generation Model in a Training-free
  Way
Authors: name: Jiazi Bu, name: Pengyang Ling, name: Pan Zhang, name: Tong Wu, name: Xiaoyi Dong, name: Yuhang Zang, name: Yuhang Cao, name: Dahua Lin, name: Jiaqi Wang

The text-to-video (T2V) generation models, offering convenient visual
creation, have recently garnered increasing attention. Despite their
substantial potential, the generated videos may present artifacts, including
structural implausibility, temporal inconsistency, and a lack of motion, often
resulting in near-static video. In this work, we have identified a correlation
between the disparity of temporal attention maps across different blocks and
the occurrence of temporal inconsistencies. Additionally, we have observed that
the energy contained within the temporal attention maps is directly related to
the magnitude of motion amplitude in the generated videos. Based on these
observations, we present BroadWay, a training-free method to improve the
quality of text-to-video generation without introducing additional parameters,
augmenting memory or sampling time. Specifically, BroadWay is composed of two
principal components: 1) Temporal Self-Guidance improves the structural
plausibility and temporal consistency of generated videos by reducing the
disparity between the temporal attention maps across various decoder blocks. 2)
Fourier-based Motion Enhancement enhances the magnitude and richness of motion
by amplifying the energy of the map. Extensive experiments demonstrate that
BroadWay significantly improves the quality of text-to-video generation with
negligible additional cost.