VideoLLM 知道何時發聲:透過影片-文字二重互動格式增強時效性影片理解

VideoLLM Knows When to Speak: Enhancing Time-Sensitive Video Comprehension with Video-Text Duet Interaction Format

November 27, 2024
作者: Yueqian Wang, Xiaojun Meng, Yuxuan Wang, Jianxin Liang, Jiansheng Wei, Huishuai Zhang, Dongyan Zhao
cs.AI

摘要

近期對於影片大型語言模型(VideoLLM)的研究主要聚焦於模型架構和訓練數據集,而對使用者與模型之間的互動格式則尚未深入探討。在現有研究中,使用者通常透過整個影片和查詢作為輸入與VideoLLMs進行互動,隨後模型生成回應。這種互動格式限制了VideoLLMs在諸如直播理解等場景中的應用,其中影片不會結束且需要即時回應,同時導致在需要定位影片片段的時間敏感任務上表現不佳。本文專注於影片文本二重奏互動格式。這種互動格式的特點是影片的連續播放,使用者和模型都可以在影片播放期間的任何位置插入他們的文本消息。當文本消息結束時,影片繼續播放,類似於二位表演者進行二重奏的方式。我們建立了MMDuetIT,一個旨在使VideoLLMs適應影片文本二重奏互動格式的影片文本訓練數據集。我們還引入了多答案基於影片的問答(MAGQA)任務,以評估VideoLLMs的實時回應能力。在MMDuetIT上訓練後,MMDuet表明採用影片文本二重奏互動格式使模型在各種時間敏感任務上實現顯著改進(YouCook2密集影片字幕的76% CIDEr,QVHighlights亮點檢測的90% mAP和Charades-STA時間影片定位的25% R@0.5),並且使VideoLLMs能夠在影片播放時以實時方式回覆。代碼、數據和演示可在以下鏈接找到:https://github.com/yellow-binary-tree/MMDuet。
English
Recent researches on video large language models (VideoLLM) predominantly focus on model architectures and training datasets, leaving the interaction format between the user and the model under-explored. In existing works, users often interact with VideoLLMs by using the entire video and a query as input, after which the model generates a response. This interaction format constrains the application of VideoLLMs in scenarios such as live-streaming comprehension where videos do not end and responses are required in a real-time manner, and also results in unsatisfactory performance on time-sensitive tasks that requires localizing video segments. In this paper, we focus on a video-text duet interaction format. This interaction format is characterized by the continuous playback of the video, and both the user and the model can insert their text messages at any position during the video playback. When a text message ends, the video continues to play, akin to the alternative of two performers in a duet. We construct MMDuetIT, a video-text training dataset designed to adapt VideoLLMs to video-text duet interaction format. We also introduce the Multi-Answer Grounded Video Question Answering (MAGQA) task to benchmark the real-time response ability of VideoLLMs. Trained on MMDuetIT, MMDuet demonstrates that adopting the video-text duet interaction format enables the model to achieve significant improvements in various time-sensitive tasks (76% CIDEr on YouCook2 dense video captioning, 90\% mAP on QVHighlights highlight detection and 25% R@0.5 on Charades-STA temporal video grounding) with minimal training efforts, and also enable VideoLLMs to reply in a real-time manner as the video plays. Code, data and demo are available at: https://github.com/yellow-binary-tree/MMDuet.

Summary

AI-Generated Summary

Paper Overview

This paper introduces the MMDuet model for video-text interaction tasks, utilizing a video-text duet format for real-time response generation. The MMDuetIT dataset is created to train VideoLLMs in this format, significantly improving performance on time-sensitive tasks like video captioning and highlight detection.

Core Contribution

  • Introduction of the video-text duet interaction format for VideoLLMs.
  • Development of the MMDuet model with additional informative and relevance heads for response generation.
  • Creation of the MMDuetIT dataset to train VideoLLMs in the video-text duet format.
  • Proposal of the MAGQA task to benchmark VideoLLMs' real-time response capabilities.

Research Context

The study positions itself within the realm of video comprehension systems, focusing on enhancing real-time response abilities through the video-text duet interaction format. It addresses the limitations of existing VideoLLMs by introducing a novel model structure and training dataset for improved performance in time-sensitive video tasks.

Keywords

Video Large Language Models (VideoLLMs), MMDuet model, MMDuetIT dataset, MAGQA task, real-time response, video-text duet interaction, informative head, relevance head, time-sensitive tasks

Background

The research background of this paper lies in the inadequacy of existing VideoLLMs in addressing user-model interaction formats for real-time responses. The study aims to bridge this gap by introducing the video-text duet interaction format and the MMDuet model, focusing on enhancing performance in time-sensitive video tasks.

Research Gap

Existing VideoLLMs lack efficient user-model interaction formats for real-time responses. Prior approaches focus on model architectures and training datasets, neglecting timely interactions. Technical Challenges Incorporating real-time response capabilities in VideoLLMs. Addressing time-sensitive tasks like video captioning and highlight detection. Prior Approaches Existing VideoLLMs emphasize model architectures and training datasets. Neglect of user-model interaction formats for real-time responses.

Methodology

The research methodology involves developing the MMDuet model with a visual encoder, projector, and transformer-decoder LLM, incorporating informative and relevance heads for response generation. The MMDuetIT dataset is utilized for training, encompassing tasks like dense captioning, multi-answer grounded video question-answering, and temporal video grounding.

Theoretical Foundation

Utilization of transformer-decoder LLM for response generation. Inclusion of informative and relevance heads to enhance response quality. Technical Architecture MMDuet model structure with visual encoder, projector, and transformer-decoder LLM. Implementation Details Training tasks include dense captioning, multi-answer grounded video question-answering, and temporal video grounding. Innovation Points Introduction of informative and relevance heads in the MMDuet model. Utilization of the video-text duet format for real-time response generation.

Experimental Validation

The experimental validation involves evaluating MMDuet's performance in tasks like highlight detection and temporal video grounding, showcasing significant improvements over baseline models like TimeChat and VTimeLLM. The model demonstrates robustness in dense video captioning tasks and excels in real-time response generation for the MAGQA task.

Setup

Training on the MMDuetIT dataset with tasks like dense captioning and multi-answer grounded video question-answering. Metrics Evaluation based on CIDEr and CODA c metrics for text quality. Results Significant improvements in highlight detection and temporal video grounding tasks. Comparative Analysis Outperformance of baseline models in text quality and real-time response generation.

Impact and Implications

The study's key findings include the effectiveness of the MMDuet model in time-sensitive video tasks and real-time response generation. While acknowledging limitations in hyperparameter requirements and future frame information incorporation, the research suggests practical applications in enhancing video comprehension systems through the video-text duet interaction format.

Key Findings

Significant improvements in time-sensitive tasks and real-time response generation. Limitations Hyperparameter requirements during inference and the need for future frame information incorporation. Future Directions Addressing inference speed and collecting real-time response datasets. Practical Significance Enhancing video comprehension systems through the video-text duet interaction format.

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