A prototype for value-added video service provisioning in content delivery networks

Content Delivery Networks (CDN) interconnect several surrogate a.k.a replica servers that use geographical proximity as a criteria for delivering multimedia content. The delivered content may be enriched by value-added video services (e.g. in-stream video advertisements). The purpose of this demo is to show the prototype we developed in order to enable a cost-efficient and agile provisioning of value-added video services in CDNs. The prototype implements our NFV and SDN-based architecture. The application-level middleboxes that enable value-added video services (e.g. mixer, compressor) are provisioned as Virtual Network Functions (VNFs) and chained using application-level SDN switches. On one hand, we will highlight how value-added video applications can be provisioned in CDN domain. On the other hand, we will show concretely the advantages and overheads of the application-level service function chaining.