ABSTRACT
This chapter focuses on the key technologies used in service platforms, which are categorized as either strong-interaction or weak-interaction, depending on their characteristics. By contract, the digital media system is used for weak-interaction cloud virtual reality (VR) services, and it provides service processing capabilities such as content ingestion, storage, production (transcoding and encapsulation), distribution, and content delivery network (CDN) scheduling. Even though traditional video service platforms feature mature coding and decoding, streaming, and CDN technologies, weak-interaction cloud VR services, by contrast, need to meet new requirements to inherit these technologies. However, with the increase in video resolution and bitrate as well as field of view (FoV) transmission technology application, new requirements are required to implement CDN. Although its coding and streaming protocols are similar to those used in traditional video services, FoV transmission technology instead involves slicing on the cloud, stitching on the terminal, and selection of the proper coding and streaming technologies.
