Dense video captioning aims to identify the events of interest in an input
video, and generate descriptive captions for each event. Previous approaches
usually follow a two-stage generative process, which first proposes a segment
for each event, then renders a caption for each identified segment. Recent
advances in large-scale sequence generation pretraining have seen great success
in unifying task formulation for a great variety of tasks, but so far, more
complex tasks such as dense video captioning are not able to fully utilize this
powerful paradigm. In this work, we show how to model the two subtasks of dense
video captioning jointly as one sequence generation task, and simultaneously
predict the events and the corresponding descriptions. Experiments on YouCook2
and ViTT show encouraging results and indicate the feasibility of training
complex tasks such as end-to-end dense video captioning integrated into
large-scale pretrained models.

本文提出一种联合建模的方法，将稠密视频字幕的两个子任务共同作为一个序列生成任务，同时预测事件和相应的描述，并使用 YouCook2 和 ViTT 的实验结果表明了该方法的可行性和在大规模预训练模型中集成端到端密集视频字幕等复杂任务中的适用性。