Moonshot: Towards Controllable Video Generation and Editing with
  Multimodal Conditions
David Junhao Zhang Dongxu Li Hung Le Mike Zheng Shou Caiming Xiong Doyen Sahoo
Most existing video diffusion models (VDMs) are limited to mere text
conditions. Thereby, they are usually lacking in control over visual appearance
and geometry structure of the generated videos. This work presents Moonshot, a
new video generation model that conditions simultaneously on multimodal inputs
of image and text. The model builts upon a core module, called multimodal video
block (MVB), which consists of conventional spatialtemporal layers for
representing video features, and a decoupled cross-attention layer to address
image and text inputs for appearance conditioning. In addition, we carefully
design the model architecture such that it can optionally integrate with
pre-trained image ControlNet modules for geometry visual conditions, without
needing of extra training overhead as opposed to prior methods. Experiments
show that with versatile multimodal conditioning mechanisms, Moonshot
demonstrates significant improvement on visual quality and temporal consistency
compared to existing models. In addition, the model can be easily repurposed
for a variety of generative applications, such as personalized video
generation, image animation and video editing, unveiling its potential to serve
as a fundamental architecture for controllable video generation. Models will be
made public on https://github.com/salesforce/LAVIS.