MetaSampling: Making Frame Samplers Efficient for Long-Video Question Answering

arXiv:2609.33998 · cs.CV · Submitted 2026-09-27 · Read on arXiv

cs.CV

Submitted: 2026-09-27

Updated: 2026-09-27

Terminology

• Accuracy — 38× in this paper · explained in 1 episode
• Benchmark — 10× in this paper · explained in 2 episodes
• Conference on Computer Vision and Pattern Recognition — 5× in this paper
• Video Question Answering — 3× in this paper
• Ablation — 2× in this paper · explained in 1 episode
• Adaptive Keyframe Sampling — 2× in this paper
• Grounding — 2× in this paper · explained in 3 episodes
• In European Conference on Computer Vision — 2× in this paper
• Redundancy — 2× in this paper · explained in 2 episodes
• Ablation study — 1× in this paper · explained in 1 episode
• Abstraction — 1× in this paper · explained in 1 episode
• Agentic Retrieval — 1× in this paper · explained in 1 episode
• Elias — 1× in this paper · explained in 2 episodes
• Embeddings — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Foundation Model — 1× in this paper · explained in 3 episodes
• Foundation Models — 1× in this paper · explained in 7 episodes
• Generalizability — 1× in this paper · explained in 6 episodes
• Pruning — 1× in this paper · explained in 4 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Transformer — 1× in this paper · explained in 2 episodes

Sources

• HiMu: Hierarchical Multimodal Frame Selection for Long Video Question Answering
• Event-Anchored Frame Selection for Effective Long-Video Understanding
• QCA: Query- and Content-Aware Keyframe Selection for Long Video Understanding
• InternVL3.5: Advancing Open-Source Multimodal Models in Versatility, Reasoning, and Efficiency
• Query-Conditioned Evidential Keyframe Sampling for MLLM-Based Long-Form Video Understanding
• VideoLLaMA 3: Frontier Multimodal Foundation Models for Image and Video Understanding
• Coverage-Driven Adaptive Keyframe Selection for Video Understanding
• Towards Fast and Effective Long Video Understanding of Multimodal Large Language Models via Adaptive Quasi-Gaussian Sampling
• AdaRD-key: Adaptive Relevance-Diversity Keyframe Sampling for Long-form Video understanding

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