Video-Panda: Parameter-efficient Alignment for Encoder-free Video-Language Models

• URL: http://arxiv.org/abs/2412.18609v1
• Date: Tue, 24 Dec 2024 18:59:56 GMT
• Title: Video-Panda: Parameter-efficient Alignment for Encoder-free Video-Language Models
• Authors: Jinhui Yi, Syed Talal Wasim, Yanan Luo, Muzammal Naseer, Juergen Gall,
• Abstract summary: Current video models typically rely on heavyweight image encoders (300M-1.1B parameters) or video encoders (1B-1.4B parameters) Our method introduces a novel Spatio-Temporal Alignment Block (STAB) that directly processes video inputs without requiring pre-trained encoders. Our model achieves comparable or superior performance to encoder-based approaches for open-ended video question answering on standard benchmarks.
• Score: 26.866184981409607
• License:
• Abstract: We present an efficient encoder-free approach for video-language understanding that achieves competitive performance while significantly reducing computational overhead. Current video-language models typically rely on heavyweight image encoders (300M-1.1B parameters) or video encoders (1B-1.4B parameters), creating a substantial computational burden when processing multi-frame videos. Our method introduces a novel Spatio-Temporal Alignment Block (STAB) that directly processes video inputs without requiring pre-trained encoders while using only 45M parameters for visual processing - at least a 6.5$\times$ reduction compared to traditional approaches. The STAB architecture combines Local Spatio-Temporal Encoding for fine-grained feature extraction, efficient spatial downsampling through learned attention and separate mechanisms for modeling frame-level and video-level relationships. Our model achieves comparable or superior performance to encoder-based approaches for open-ended video question answering on standard benchmarks. The fine-grained video question-answering evaluation demonstrates our model's effectiveness, outperforming the encoder-based approaches Video-ChatGPT and Video-LLaVA in key aspects like correctness and temporal understanding. Extensive ablation studies validate our architectural choices and demonstrate the effectiveness of our spatio-temporal modeling approach while achieving 3-4$\times$ faster processing speeds than previous methods. Code is available at \url{https://github.com/jh-yi/Video-Panda}.

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