Video sharing in social networking systems

Now a days the social media is come into bud of online social networks (e.g., Facebook [1], Google+ [2]) and video streaming sites e.g., YouTube [3], as well as a coming together between the two types of systems. More and more media contents (video clips, images, etc.) are published and shared among users on social network sites while the video streaming systems are increasingly leveraging social networks to promote their videos and attract viewers. Peer-to-peer technology has been encouraged to improve the server load in video streaming applications, such that user's peers directly send video streams to each other, with less dependence on the dedicated servers. Challenges remain in a peer to peer design, among which incentivizing sufficient and stable peer bandwidth contribution has been a basic one. There have been a number of various designs based on direct or indirect resource trading, but none of them has utilized social connections among the peers. The unique setting of a social video streaming system has made very promising a more effective social responsibility based incentive for Peer to Peer video streaming over a social network, that exploits the natural intentionality for each peer to help socially connected peers.