3D video has been considered as the next step in television for some time. The transition from 2D to 3D is frequently seen as comparable to the transition from monochrome to color. The introduction of this new dimension adds new challenges regarding the question of its relates with Quality of Experience (QoE). This chapter mainly focuses on presenting the particular challenges related with stereoscopic 3D video quality. This includes the difficulty to evaluate QoE of 3D video, taking into account all relevant factors. In particular, traditional approaches fail to capture aspects such as the added value in terms of QoE due to 3D depth or quality-issues brought by 3D-specific artifacts and their effect on visual comfort, so that alternative solutions for evaluation are required. As a consequence, the aim of this chapter is to address 3D-specific aspects of visual perception. The employed technology is another aspect of high influence on 3D video QoE. The chapter addresses the different issues related with content creation, transmission and representation, to help the reader understand the differences to a 2D transmission chain, and how technology affects the perception and the construction of the general judgment of 3D video QoE.