T2Vid: Translating Long Text into Multi-Image is the Catalyst for Video-LLMs

• URL: http://arxiv.org/abs/2411.19951v2
• Date: Mon, 02 Dec 2024 06:54:47 GMT
• Title: T2Vid: Translating Long Text into Multi-Image is the Catalyst for Video-LLMs
• Authors: Shukang Yin, Chaoyou Fu, Sirui Zhao, Yunhang Shen, Chunjiang Ge, Yan Yang, Zuwei Long, Yuhan Dai, Tong Xu, Xing Sun, Ran He, Caifeng Shan, Enhong Chen,
• Abstract summary: We develop a method called T2Vid to synthesize video-like samples to enrich the instruction diversity in the training corpus.<n>We find that the proposed scheme can boost the performance of long video understanding without training with long video samples.
• Score: 102.66246727371583
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The success of Multimodal Large Language Models (MLLMs) in the image domain has garnered wide attention from the research community. Drawing on previous successful experiences, researchers have recently explored extending the success to the video understanding realms. Apart from training from scratch, an efficient way is to utilize the pre-trained image-LLMs, leading to two mainstream approaches, i.e. zero-shot inference and further fine-tuning with video data. In this work, our study of these approaches harvests an effective data augmentation method. We first make a deeper inspection of the zero-shot inference way and identify two limitations, i.e. limited generalization and lack of temporal understanding capabilities. Thus, we further investigate the fine-tuning approach and find a low learning efficiency when simply using all the video data samples, which can be attributed to a lack of instruction diversity. Aiming at this issue, we develop a method called T2Vid to synthesize video-like samples to enrich the instruction diversity in the training corpus. Integrating these data enables a simple and efficient training scheme, which achieves performance comparable to or even superior to using full video datasets by training with just 15% the sample size. Meanwhile, we find that the proposed scheme can boost the performance of long video understanding without training with long video samples. We hope our study will spark more thinking about using MLLMs for video understanding and curation of high-quality data. The code is released at https://github.com/xjtupanda/T2Vid.

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