Toward Efficient Short-Video Sharing in the YouTube Social Network

Abstract

The past few years have seen an explosion in the popularity of online short-video sharing in YouTube. As the number of users continue to grow, the bandwidth required to maintain acceptable quality of service (QoS) has greatly increased. Peer-to-peer (P2P) architectures have shown promise in reducing the bandwidth costs; however, the previous works build one P2P overlay for each video, which provides limited availability of video providers and produces high overlay maintenance overhead. To handle these problems, in this work, we novelly leverage the existing social network in YouTube, where a user subscribes to another user’s channel to track all his/her uploaded videos. The subscribers of a channel tend to watch the channel’s videos and common-interest nodes tend to watch the same videos. Also, the popularity of videos in one channel varies greatly. We study real trace data to confirm these properties. Based on these properties, we propose SocialTube, which builds the subscribers of one channel into a P2P overlay and also clusters common-interest nodes in a higher level. It also incorporates a prefetching algorithm that prefetches higher-popularity videos. To enhance the system performance, we further propose the demand/supply-based cache management scheme and reputation-based neighbor management scheme. Extensive trace-driven simulation results and PlanetLab real-world experimental results verify the effectiveness of SocialTube at reducing server load and overlay maintenance overhead and at improving QoS for users.

An Intelligent Recommendation Model for Health Culture Based on Short Video Content Analysis in the Mobile Internet Environment

“…Chinese youth can only fulfil their mission and responsibilities in the new era by bolstering cultural self-confidence, fully reaffirming the value of an excellent, healthy cultural environment, and having absolute faith in its vitality. The gradual development of new media communication forms has opened up new possibilities for the dissemination of a positive cultural environment [1]. Short video is one of the mobile phone clients that is currently undergoing the most rapid development.…”

Toward fine‐grained access control and privacy protection for video sharing in media convergence environment

“…PKI enables central authorities to offer verified credentials within the environments. 16 Shen et al 15 revealed the challenges in overcoming three PKI constraints depending on authentication mechanisms.…”

“…The corresponding test results are shown in Figure 3 and Table 4. The time cost was evaluated for specific encryption algorithms using (5,10,15,20,25) attribute values. The corresponding time cost remained constant at 21.71 ms, as shown in Table 3.…”

“…Furthermore, the authenticity of the user's identity must be verified while sharing video content. Shen et al 15 suggested that the user's actual identity should not be disclosed except to a trusted authority (TA). However, designing an anonymous data verification mechanism can be challenging.…”

“…PKI enables central authorities to offer verified credentials within the environments 16 . Shen et al 15 revealed the challenges in overcoming three PKI constraints depending on authentication mechanisms. (1) Using inadequately signed messages, intruders can perform denial of service (DoS) attacks.…”