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Memory-efficient Streaming VideoLLMs for Real-time Procedural Video Understanding

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arxiv 2504.13915 v1 pith:SC64E5YQ submitted 2025-04-10 cs.CV

Memory-efficient Streaming VideoLLMs for Real-time Procedural Video Understanding

classification cs.CV
keywords providellmtokensobservationsproceduralstreamingvideocachelong-term
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We introduce ProVideLLM, an end-to-end framework for real-time procedural video understanding. ProVideLLM integrates a multimodal cache configured to store two types of tokens - verbalized text tokens, which provide compressed textual summaries of long-term observations, and visual tokens, encoded with DETR-QFormer to capture fine-grained details from short-term observations. This design reduces token count by 22x over existing methods in representing one hour of long-term observations while effectively encoding fine-granularity of the present. By interleaving these tokens in our multimodal cache, ProVideLLM ensures sub-linear scaling of memory and compute with video length, enabling per-frame streaming inference at 10 FPS and streaming dialogue at 25 FPS, with a minimal 2GB GPU memory footprint. ProVideLLM also sets new state-of-the-art results on six procedural tasks across four datasets.

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Cited by 8 Pith papers

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

  1. Seen, Said, or Forgotten? A Causal Audit of Visual KV Memory Across Dialog Turns

    cs.CV 2026-07 conditional novelty 7.0

    Current attention is not a safe-forgetting signal for visual KV memory; damage from eviction concentrates in visually dependent turns, and only explicitly verbalized facts are reliably rescued by assistant text.

  2. ProtoKV: Streaming Video Understanding under Delayed Query with Summary-State Memory

    cs.CV 2026-06 unverdicted novelty 6.0

    ProtoKV maintains a fixed-capacity summary state for far history in streaming video, improving accuracy by up to 12.5 points in long-delay query scenarios compared to token-retention methods.

  3. FlowNar: Scalable Streaming Narration for Long-Form Videos

    cs.CV 2026-05 unverdicted novelty 6.0

    FlowNar achieves bounded memory and 3x higher throughput for streaming narration on Ego4D, EgoExo4D, and EpicKitchens100 by combining dynamic historical context removal with a Cross Linear Attentive Memory module.

  4. Personal Visual Context Learning in Large Multimodal Models

    cs.CV 2026-05 unverdicted novelty 6.0

    Introduces Personal VCL formalization and benchmark revealing LMM context gaps, plus an Agentic Context Bank baseline that boosts personalized visual reasoning.

  5. ViCoStream: Streaming VideoLLMs Can Run Beyond 100 FPS with Stage-Wise Coordinated Inference

    cs.CV 2026-06 unverdicted novelty 5.0

    ViCoStream is a new coordinated pipeline framework for streaming VideoLLMs that achieves 134 FPS video throughput and less than 50 ms TTFT on A100 while keeping accuracy near full-history baselines.

  6. MuKV: Multi-Grained KV Cache Compression for Long Streaming Video Question-Answering

    cs.CV 2026-05 conditional novelty 5.0

    MuKV adds multi-grained KV cache compression at patch-frame-segment levels plus semi-hierarchical retrieval to raise accuracy and cut memory in long video question-answering.

  7. Decouple and Cache: KV Cache Construction for Streaming Video Understanding

    cs.CV 2026-05 unverdicted novelty 5.0

    DSCache decouples cumulative past and instant KV caches with position-agnostic encoding to adapt offline VideoVLLMs to streaming video, delivering 2.5% average accuracy gains on QA benchmarks.

  8. Watch, Remember, Reason: Human-View Video Understanding with MLLMs

    cs.CV 2026-06 unverdicted novelty 4.0

    This is a survey that frames video MLLM research via a human-view formulation of perceptual representations, memory states, reasoning traces, and predictions, then reviews methods, datasets, benchmarks, and open problems.