  Existing datasets for manually labelled query-based video summarization are
costly and thus small, limiting the performance of supervised deep video
summarization models. Self-supervision can address the data sparsity challenge
by using a pretext task and defining a method to acquire extra data with pseudo
labels to pre-train a supervised deep model. In this work, we introduce
segment-level pseudo labels from input videos to properly model both the
relationship between a pretext task and a target task, and the implicit
relationship between the pseudo label and the human-defined label. The pseudo
labels are generated based on existing human-defined frame-level labels. To
create more accurate query-dependent video summaries, a semantics booster is
proposed to generate context-aware query representations. Furthermore, we
propose mutual attention to help capture the interactive information between
visual and textual modalities. Three commonly-used video summarization
benchmarks are used to thoroughly validate the proposed approach. Experimental
results show that the proposed video summarization algorithm achieves
state-of-the-art performance.
