Dispider: Enabling Video LLMs with Active Real-Time Interaction via
  Disentangled Perception, Decision, and Reaction
Authors: name: Rui Qian, name: Shuangrui Ding, name: Xiaoyi Dong, name: Pan Zhang, name: Yuhang Zang, name: Yuhang Cao, name: Dahua Lin, name: Jiaqi Wang

Active Real-time interaction with video LLMs introduces a new paradigm for
human-computer interaction, where the model not only understands user intent
but also responds while continuously processing streaming video on the fly.
Unlike offline video LLMs, which analyze the entire video before answering
questions, active real-time interaction requires three capabilities: 1)
Perception: real-time video monitoring and interaction capturing. 2) Decision:
raising proactive interaction in proper situations, 3) Reaction: continuous
interaction with users. However, inherent conflicts exist among the desired
capabilities. The Decision and Reaction require a contrary Perception scale and
grain, and the autoregressive decoding blocks the real-time Perception and
Decision during the Reaction. To unify the conflicted capabilities within a
harmonious system, we present Dispider, a system that disentangles Perception,
Decision, and Reaction. Dispider features a lightweight proactive streaming
video processing module that tracks the video stream and identifies optimal
moments for interaction. Once the interaction is triggered, an asynchronous
interaction module provides detailed responses, while the processing module
continues to monitor the video in the meantime. Our disentangled and
asynchronous design ensures timely, contextually accurate, and computationally
efficient responses, making Dispider ideal for active real-time interaction for
long-duration video streams. Experiments show that Dispider not only maintains
strong performance in conventional video QA tasks, but also significantly
surpasses previous online models in streaming scenario responses, thereby
validating the effectiveness of our architecture. The code and model are
released at https://github.com/Mark12Ding/Dispider.