Complex software systems are drafted, specified, and implemented in cooperation of all stakeholders. A shared understanding of requirements is important in all phases. However, requirements engineers, customers, developers, testers, and other stakeholders do not have a shared understanding of requirements due to insufficient communication. To solve this problem, this paper proposes to use videos to facilitate stakeholder involvement in requirements engineering. The basic idea is to use vision videos and test videos in requirements engineering with the help of testing techniques. A vision video visualises a future software system with a motivation and an envisioned solution. Requirement engineers use vision videos to elicit testable requirements from stakeholders and then validate the elicited requirements. A test video shows test executions of a software under development. Developers use test videos for (1) clarification of misunderstood requirements among development team and (2) eliciting new requirements and collecting feedback from stakeholders. Experiments and case studies are planned to check the effectivity or efficiency of these methods. The testability of a software is shaped at the beginning through defining testable requirements. During development, these requirements are updated through stakeholders’ feedback. Hence, using video in requirements engineering ensures software quality.