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VideoAgent: Long-form Video Understanding with Large Language Model as Agent

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arxiv 2403.10517 v1 pith:6DVJE5ZL submitted 2024-03-15 cs.CV cs.AIcs.CLcs.IR

VideoAgent: Long-form Video Understanding with Large Language Model as Agent

classification cs.CV cs.AIcs.CLcs.IR
keywords long-formunderstandingvideomodelvideoagentagentagent-basedinformation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Long-form video understanding represents a significant challenge within computer vision, demanding a model capable of reasoning over long multi-modal sequences. Motivated by the human cognitive process for long-form video understanding, we emphasize interactive reasoning and planning over the ability to process lengthy visual inputs. We introduce a novel agent-based system, VideoAgent, that employs a large language model as a central agent to iteratively identify and compile crucial information to answer a question, with vision-language foundation models serving as tools to translate and retrieve visual information. Evaluated on the challenging EgoSchema and NExT-QA benchmarks, VideoAgent achieves 54.1% and 71.3% zero-shot accuracy with only 8.4 and 8.2 frames used on average. These results demonstrate superior effectiveness and efficiency of our method over the current state-of-the-art methods, highlighting the potential of agent-based approaches in advancing long-form video understanding.

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Forward citations

Cited by 11 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. SVAgent: Storyline-Guided Long Video Understanding via Cross-Modal Multi-Agent Collaboration

    cs.CV 2026-04 unverdicted novelty 7.0

    SVAgent improves long video question answering by constructing storylines via multi-agent collaboration and aligning cross-modal predictions for more robust, human-like reasoning.

  2. Seeing the Scene Matters: Revealing Forgetting in Video Understanding Models with a Scene-Aware Long-Video Benchmark

    cs.CV 2026-03 unverdicted novelty 7.0

    SceneBench shows VLMs lose accuracy on scene-level questions in long videos due to forgetting, and Scene-RAG retrieval improves performance by 2.5%.

  3. MLVU: Benchmarking Multi-task Long Video Understanding

    cs.CV 2024-06 conditional novelty 7.0

    MLVU is a new benchmark for long video understanding that uses extended videos across diverse genres and multi-task evaluations, revealing that current MLLMs struggle significantly and degrade sharply with longer durations.

  4. HPP: Hierarchical Programmatic Probing for Long Video Understanding by Decoupling Perception and Reasoning

    cs.CV 2026-06 unverdicted novelty 6.0

    HPP decouples perception from reasoning in long-video VLMs by having an LLM run iterative programmatic probes on hierarchically segmented video, reporting gains on LongVideoBench, EgoSchema, VideoMME, and MLVU.

  5. Video Active Perception: Effective Inference-Time Long-Form Video Understanding with Vision-Language Models

    cs.CV 2026-05 unverdicted novelty 6.0

    VAP is a training-free active-perception method that improves zero-shot long-form video QA performance and frame efficiency up to 5.6x in VLMs by selecting keyframes that differ from priors generated by a text-conditi...

  6. EgoExo-Con: Exploring View-Invariant Video Temporal Understanding

    cs.CV 2025-10 conditional novelty 6.0

    Most Video-LLMs answer temporal questions far less consistently when the same event is shown from ego and exo views, and a GRPO variant with a reasoning-similarity reward partially closes the gap.

  7. Parameter-Efficient Multi-View Proficiency Estimation: From Discriminative Classification to Generative Feedback

    cs.CV 2026-05 unverdicted novelty 5.0

    SkillFormer, PATS, and ProfVLM deliver state-of-the-art multi-view proficiency estimation on Ego-Exo4D with up to 20x fewer parameters by combining selective fusion, dense sampling, and generative feedback.

  8. Seeing the Scene Matters: Revealing Forgetting in Video Understanding Models with a Scene-Aware Long-Video Benchmark

    cs.CV 2026-03 unverdicted novelty 5.0

    SceneBench shows VLMs sharply lose accuracy on scene-level long-video questions, and Scene-RAG only partially mitigates that forgetting (+2.50%).

  9. Towards Sparse Video Understanding and Reasoning

    cs.CV 2026-02 conditional novelty 5.0

    A video-QA agent that carries only a structured text summary between rounds beats dense-frame baselines on accuracy while using a handful of frames per video.

  10. UNIVID: Unified Vision-Language Model for Video Moderation

    cs.MM 2026-06 unverdicted novelty 4.0

    UNIVID generates policy-aware captions for video moderation, reducing violation leakage by 42.7% and overkill rate by 37.0% while replacing over 1,000 policy-specific models with a single backbone.

  11. MARS: Technical Report for the CASTLE Challenge at EgoVis 2026

    cs.CV 2026-05 unverdicted novelty 3.0

    MARS converts long videos to captions and summaries, maintains modality-specific memories, and deploys an agent to select evidence or answer, placing second on the CASTLE Challenge leaderboard.