The authors assembled LongVideo, comprising more than 1,000 standalone long videos and two multi-season television series, totaling approximately 900 hours.
External memory tools improve models’ reasoning across long video streams
Jia and colleagues introduce a roughly 900-hour video benchmark and report performance gains above 50% for all 13 tested models when paired with their memory-and-retrieval system.
Chinese Tech
Yanhao Jia · Yi Zhu · Yiran Zhong · Weigao Sun · Feida Zhu · Pengkun Jiao · +4 more
Nanyang Technological University · Token Foundry, Alibaba · The Chinese University of Hong Kong · Institute of Neuroscience, Chinese Academy of Sciences · University of Chinese Academy of Sciences
Research Digest··2 min read

Jia and colleagues test whether AI models can connect evidence scattered across long videos, including multiple television seasons.
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