Daily-Omni: Towards Audio-Visual Reasoning with Temporal Alignment across Modalities

2025-05-23

AI Summary

Current multimodal large language models (MLLMs) perform well on unimodal benchmarks but exhibit limited capability in audio-visual joint reasoning and fine-grained temporal alignment, with no systematic evaluation available. Method: We introduce Daily-Omni, the first audio-visual synchronized reasoning benchmark for everyday scenarios, comprising 684 multi-source videos and 1,197 multiple-choice QA items covering six cross-modal understanding tasks. We propose a novel frame-level timestamp-based evaluation paradigm for audio-visual temporal alignment and design an automated QA generation pipeline. Additionally, we build Daily-Omni-Agent—a training-free agent integrating open-source vision-language models (VLMs), audio-language models (ALMs), and automatic speech recognition (ASR) systems. Contribution/Results: Experiments reveal significant deficiencies in existing MLLMs for audio-visual collaborative reasoning. We demonstrate that lightweight temporal alignment enables substantial performance gains from VLM+ALM fusion, establishing a new reproducible baseline and evaluation framework for multimodal temporal understanding.

Technology Category

Machine Learning: Large Multimodal Models (LMMs)Computer Vision: Multi-modal VisionNatural Language Processing: Language Grounding & Multi-modal NLP

Application Category

Search and Retrieval-Augmented AI: Retrieval-Augmented Generation (RAG) and multi-modal RAGSemantics and Knowledge: Methods to enhance, augment, integrate or synergize semantic models such as knowledge graphs and LLMsUser Modeling, Personalization and Recommendation: Large Language Models (LLM) for user modeling and recommendation

Abstract

Recent Multimodal Large Language Models (MLLMs) achieve promising performance on visual and audio benchmarks independently. However, the ability of these models to process cross-modal information synchronously remains largely unexplored. In this paper, we introduce: 1) Daily-Omni, an Audio-Visual Questioning and Answering benchmark comprising 684 videos of daily life scenarios from diverse sources, rich in both audio and visual information, and featuring 1197 multiple-choice QA pairs across 6 major tasks; 2) Daily-Omni QA Generation Pipeline, which includes automatic annotation, QA generation and QA optimization, significantly improves efficiency for human evaluation and scalability of the benchmark; 3) Daily-Omni-Agent, a training-free agent utilizing open-source Visual Language Model (VLM), Audio Language Model (ALM) and Automatic Speech Recognition (ASR) model to establish a baseline for this benchmark. The results show that current MLLMs still struggle significantly with tasks requiring audio-visual integration, but combining VLMs and ALMs with simple temporal alignment techniques can achieve substantially better performance. Codes and benchmark are available at href{https://github.com/Lliar-liar/Daily-Omni}{https://github.com/Lliar-liar/Daily-Omni}.

Problem

• Evaluating MLLMs' ability to process synchronized audio-visual data
• Creating a scalable benchmark for audio-visual QA tasks
• Improving audio-visual integration using temporal alignment techniques

Innovation

• Audio-Visual QA benchmark with diverse daily scenarios
• Automatic annotation pipeline for efficient QA generation
• Training-free agent combining VLM, ALM, and ASR