This paper discusses the design of online video co-creation workshop for ESD (education for sustainable development). Our research team designed and practiced a workshop program for 112 Japanese high school students from July to November 2020. This workshop program aims for high school students to acquire abilities, attitudes, and key competencies emphasized in ESD through co-creating short videos promoting SDGs activity. Focusing on the four teams that were particularly effective from the quantitative data of the workshop, we will analyze the work process of those teams and summarize the design recommendations for the video co-creation workshop. This research explores the possibility of online video co-creation as an ESD method and contributes to sustainable ESD research even in the era of COVID-19.