Multimodal Pretraining for Dense Video Captioning
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.
PDF Abstract Asian Chapter 2020 PDF Asian Chapter 2020 Abstract
ViTT
Kinetics
HowTo100M
YouCook2
YouTube-8M
WikiHow
Recipe1M+
Results from the Paper
Ranked #1 on
Dense Video Captioning
on YouCook2
(ROUGE-L metric, using extra
training data)
