In recent years social networking and social interactions have challenged old conceptions in the media landscape. Web applications that offer video content, connected television sets and set-top boxes, tablets and smartphones as second screens, and online TV widgets have radically transformed how people watch and interact around television content. Since the wealth of existing solutions and approaches might be daunting to newcomers, this chapter surveys previous and current efforts in the area of social television and online video. In particular, this chapter provides a framework that categorizes the most salient features of social television services. The final objective is on the provision of a set of design guidelines for the development of novel applications and services that enable viewers to socialize around online video and television content.

Creating and Delivering Shared and Personalised Multi-Screen Broadcast and Broadband Experiences
Distributed and Interactive Systems

César Garcia, P.S, & Geerts, D. (2016). Social Interaction Design for Online Video and Television. In Handbook of Digital Games and Entertainment Technologies (pp. 1–37).