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Multimodal Pretraining for Dense Video Captioning

2020-11-10 21:49:14
Gabriel Huang, Bo Pang, Zhenhai Zhu, Clara Rivera, Radu Soricut
arXiv_CV
       
Abstract

Learning specific hands-on skills such as cooking, car maintenance, and home repairs increasingly happens via instructional videos. The user experience with such videos is known to be improved by meta-information such as time-stamped annotations for the main steps involved. Generating such annotations automatically is challenging, and we describe here two relevant contributions. First, we construct and release a new dense video captioning dataset, Video Timeline Tags (ViTT), featuring a variety of instructional videos together with time-stamped annotations. Second, we explore several multimodal sequence-to-sequence pretraining strategies that leverage large unsupervised datasets of videos and caption-like texts. We pretrain and subsequently finetune dense video captioning models using both YouCook2 and ViTT. We show that such models generalize well and are robust over a wide variety of instructional videos.

Abstract (translated)

URL

https://arxiv.org/abs/2011.11760

PDF

https://arxiv.org/pdf/2011.11760.pdf

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