  Creating shared understanding between stakeholders is essential for the
success of software projects. Conflicting requirements originating from
misaligned mental models can hinder the development process. The use of videos
to present abstract system visions is one approach to counteract this problem.
These videos are usually shown in in-person meetings. However, face-to-face
meetings are not suited to every situation and every stakeholder, for example
due to scheduling constraints. Methods for the use of vision videos in online
settings are necessary. Furthermore, methods enabling an asynchronous use of
vision videos are needed for cases when conjoined meetings are impossible even
in an online setting.
  In this paper, we compare synchronous and asynchronous viewings of vision
videos in online settings. The two methods are piloted in a preliminary
experiment. The results show a difference in the amount of arguments regarding
the presented visions. On average, participants who took part in asynchronous
meetings stated more arguments. Our results point to multiple advantages and
disadvantages as well as use cases for each type. For example, a synchronous
meeting could be chosen when all involved stakeholders can attend the
appointment to discuss the vision and to quickly resolve ambiguities. An
asynchronous meeting could be held if a joint meeting is not feasible due to
time constraints. We also discuss how our findings can be applied to the
elicitation of requirements from a crowd of stakeholders.
