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Scaling multimodal large language models (MLLMs) to long videos is constrained by limited context windows. While retrieval-augmented generation (RAG) is a promising remedy by organizing query-relevant visual evidence into a compact context,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Honghao Fu , Miao Xu , Yiwei Wang , Dailing Zhang , Jun Liu , Yujun Cai

Online video understanding requires models to perform continuous perception and long-range reasoning within potentially infinite visual streams. Its fundamental challenge lies in the conflict between the unbounded nature of streaming media…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Siwei Wen , Zhangcheng Wang , Xingjian Zhang , Lei Huang , Wenjun Wu

We propose MR. Video, an agentic long video understanding framework that demonstrates the simple yet effective MapReduce principle for processing long videos: (1) Map: independently and densely perceiving short video clips, and (2) Reduce:…

Computer Vision and Pattern Recognition · Computer Science 2025-04-23 Ziqi Pang , Yu-Xiong Wang

Current video-language models struggle with long-video understanding due to limited context lengths and reliance on sparse frame subsampling, often leading to information loss. This paper introduces $\infty$-Video, which can process…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Saul Santos , António Farinhas , Daniel C. McNamee , André F. T. Martins

Efficient long-video understanding~(LVU) remains a challenging task in computer vision. Current long-context vision-language models~(LVLMs) suffer from information loss due to compression and brute-force downsampling. While…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Huaying Yuan , Zheng Liu , Minghao Qin , Hongjin Qian , Yan Shu , Zhicheng Dou , Ji-Rong Wen , Nicu Sebe

Long video understanding has emerged as an increasingly important yet challenging task in computer vision. Agent-based approaches are gaining popularity for processing long videos, as they can handle extended sequences and integrate various…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Zhuo Zhi , Qiangqiang Wu , Minghe shen , Wenbo Li , Yinchuan Li , Kun Shao , Kaiwen Zhou

Vision-Language Models (VLMs) have enabled substantial progress in video understanding by leveraging cross-modal reasoning capabilities. However, their effectiveness is limited by the restricted context window and the high computational…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zeyu Xu , Junkang Zhang , Qiang Wang , Yi Liu

Lifelong interactive agents are expected to assist users over months or years, which requires continually writing long term memories while retrieving the right evidence for each new query under fixed context and latency budgets. Existing…

Information Retrieval · Computer Science 2026-03-23 Can Lv , Heng Chang , Yuchen Guo , Shengyu Tao , Shiji Zhou

Long videos, ranging from minutes to hours, present significant challenges for current Multi-modal Large Language Models (MLLMs) due to their complex events, diverse scenes, and long-range dependencies. Direct encoding of such videos is…

Computer Vision and Pattern Recognition · Computer Science 2026-01-12 Zizhong Li , Haopeng Zhang , Jiawei Zhang

Videos, with their unique temporal dimension, demand precise grounded understanding, where answers are directly linked to visual, interpretable evidence. Despite significant breakthroughs in text-based reasoning with large language models,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Ye Liu , Kevin Qinghong Lin , Chang Wen Chen , Mike Zheng Shou

With the increasing demand for step-wise, cross-modal, and knowledge-grounded reasoning, multimodal large language models (MLLMs) are evolving beyond the traditional fixed retrieve-then-generate paradigm toward more sophisticated agentic…

Artificial Intelligence · Computer Science 2026-03-03 Xuying Ning , Dongqi Fu , Tianxin Wei , Mengting Ai , Jiaru Zou , Ting-Wei Li , Hanghang Tong , Yada Zhu , Hendrik Hamann , Jingrui He

The evolution of autonomous agents is redefining information seeking, transitioning from passive retrieval to proactive, open-ended web research. However, a significant modality gap remains in processing the web's most dynamic and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-19 Zhengyang Liang , Yan Shu , Xiangrui Liu , Minghao Qin , Kaixin Liang , Nicu Sebe , Zheng Liu , Lizi Liao

Understanding domain-specific theorems often requires more than just text-based reasoning; effective communication through structured visual explanations is crucial for deeper comprehension. While large language models (LLMs) demonstrate…

Artificial Intelligence · Computer Science 2025-05-27 Max Ku , Thomas Chong , Jonathan Leung , Krish Shah , Alvin Yu , Wenhu Chen

Long-form video understanding with Large Vision Language Models is challenged by the need to analyze temporally dispersed yet spatially concentrated key moments within limited context windows. In this work, we introduce VideoMindPalace, a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Zeyi Huang , Yuyang Ji , Xiaofang Wang , Nikhil Mehta , Tong Xiao , Donghyun Lee , Sigmund Vanvalkenburgh , Shengxin Zha , Bolin Lai , Yiqiu Ren , Licheng Yu , Ning Zhang , Yong Jae Lee , Miao Liu

Long video understanding presents significant challenges for vision-language models due to extremely long context windows. Existing solutions relying on naive chunking strategies with retrieval-augmented generation, typically suffer from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Xinlei Yin , Xiulian Peng , Xiao Li , Zhiwei Xiong , Yan Lu

Agentic memory systems enable large language model (LLM) agents to maintain state across long interactions, supporting long-horizon reasoning and personalization beyond fixed context windows. Despite rapid architectural development, the…

Computation and Language · Computer Science 2026-05-21 Dongming Jiang , Yi Li , Songtao Wei , Jinxin Yang , Ayushi Kishore , Alysa Zhao , Dingyi Kang , Xu Hu , Feng Chen , Qiannan Li , Bingzhe Li

Large Language Model (LLM) agents exhibit remarkable conversational and reasoning capabilities but remain constrained by limited context windows and the lack of persistent memory. Recent efforts address these limitations via external memory…

Information Retrieval · Computer Science 2026-01-07 Zhengjun Huang , Zhoujin Tian , Qintian Guo , Fangyuan Zhang , Yingli Zhou , Di Jiang , Zeying Xie , Xiaofang Zhou

Despite recent advances in Vision-Language Models (VLMs), long-video understanding remains a challenging problem. Although state-of-the-art long-context VLMs can process around 1000 input frames, they still struggle to effectively leverage…

Machine Learning · Computer Science 2025-07-04 Anurag Arnab , Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

The state of the art in video understanding suffers from two problems: (1) The major part of reasoning is performed locally in the video, therefore, it misses important relationships within actions that span several seconds. (2) While there…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Mohammadreza Zolfaghari , Kamaljeet Singh , Thomas Brox

Recent advancements in Large Language Models (LLMs) have expanded their capabilities to multimodal contexts, including comprehensive video understanding. However, processing extensive videos such as 24-hour CCTV footage or full-length films…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Lu Zhang , Tiancheng Zhao , Heting Ying , Yibo Ma , Kyusong Lee