VideoRefer Suite: Advancing Spatial-Temporal Object Understanding with
  Video LLM
Authors: name: Yuqian Yuan, name: Hang Zhang, name: Wentong Li, name: Zesen Cheng, name: Boqiang Zhang, name: Long Li, name: Xin Li, name: Deli Zhao, name: Wenqiao Zhang, name: Yueting Zhuang, name: Jianke Zhu, name: Lidong Bing

Video Large Language Models (Video LLMs) have recently exhibited remarkable
capabilities in general video understanding. However, they mainly focus on
holistic comprehension and struggle with capturing fine-grained spatial and
temporal details. Besides, the lack of high-quality object-level video
instruction data and a comprehensive benchmark further hinders their
advancements. To tackle these challenges, we introduce the VideoRefer Suite to
empower Video LLM for finer-level spatial-temporal video understanding, i.e.,
enabling perception and reasoning on any objects throughout the video.
Specially, we thoroughly develop VideoRefer Suite across three essential
aspects: dataset, model, and benchmark. Firstly, we introduce a multi-agent
data engine to meticulously curate a large-scale, high-quality object-level
video instruction dataset, termed VideoRefer-700K. Next, we present the
VideoRefer model, which equips a versatile spatial-temporal object encoder to
capture precise regional and sequential representations. Finally, we
meticulously create a VideoRefer-Bench to comprehensively assess the
spatial-temporal understanding capability of a Video LLM, evaluating it across
various aspects. Extensive experiments and analyses demonstrate that our
VideoRefer model not only achieves promising performance on video referring
benchmarks but also facilitates general video understanding capabilities.