StreamChat: Chatting with Streaming Video
Authors: name: Jihao Liu, name: Zhiding Yu, name: Shiyi Lan, name: Shihao Wang, name: Rongyao Fang, name: Jan Kautz, name: Hongsheng Li, name: Jose M. Alvare

This paper presents StreamChat, a novel approach that enhances the
interaction capabilities of Large Multimodal Models (LMMs) with streaming video
content. In streaming interaction scenarios, existing methods rely solely on
visual information available at the moment a question is posed, resulting in
significant delays as the model remains unaware of subsequent changes in the
streaming video. StreamChat addresses this limitation by innovatively updating
the visual context at each decoding step, ensuring that the model utilizes
up-to-date video content throughout the decoding process. Additionally, we
introduce a flexible and efficient crossattention-based architecture to process
dynamic streaming inputs while maintaining inference efficiency for streaming
interactions. Furthermore, we construct a new dense instruction dataset to
facilitate the training of streaming interaction models, complemented by a
parallel 3D-RoPE mechanism that encodes the relative temporal information of
visual and text tokens. Experimental results demonstrate that StreamChat
achieves competitive performance on established image and video benchmarks and
exhibits superior capabilities in streaming interaction scenarios compared to
state-of-the-art video LMM.