VISTA: Enhancing Long-Duration and High-Resolution Video Understanding by Video Spatiotemporal Augmentation

• URL: http://arxiv.org/abs/2412.00927v1
• Date: Sun, 01 Dec 2024 18:27:28 GMT
• Title: VISTA: Enhancing Long-Duration and High-Resolution Video Understanding by Video Spatiotemporal Augmentation
• Authors: Weiming Ren, Huan Yang, Jie Min, Cong Wei, Wenhu Chen,
• Abstract summary: Current large multimodal models (LMMs) face significant challenges in processing and comprehending long-duration or high-resolution videos.<n>We propose VISTA, a framework that synthesizes long-duration and high-resolution video instruction-following pairs from existing video-caption datasets.
• Score: 37.289657117989876
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Current large multimodal models (LMMs) face significant challenges in processing and comprehending long-duration or high-resolution videos, which is mainly due to the lack of high-quality datasets. To address this issue from a data-centric perspective, we propose VISTA, a simple yet effective Video Spatiotemporal Augmentation framework that synthesizes long-duration and high-resolution video instruction-following pairs from existing video-caption datasets. VISTA spatially and temporally combines videos to create new synthetic videos with extended durations and enhanced resolutions, and subsequently produces question-answer pairs pertaining to these newly synthesized videos. Based on this paradigm, we develop seven video augmentation methods and curate VISTA-400K, a video instruction-following dataset aimed at enhancing long-duration and high-resolution video understanding. Finetuning various video LMMs on our data resulted in an average improvement of 3.3% across four challenging benchmarks for long-video understanding. Furthermore, we introduce the first comprehensive high-resolution video understanding benchmark HRVideoBench, on which our finetuned models achieve a 6.5% performance gain. These results highlight the effectiveness of our framework.

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