Netflix Video Quality at Scale with Cosmos Microservices

This post details the architecture and implementation of the Video Quality Service (VQS) within the Cosmos microservice platform. VQS decouples video quality computations (VMAF, PSNR, SSIM) from the monolithic Reloaded video processing system, enabling independent innovation and maintenance of quality algorithms. It describes the three-layer architecture of VQS (API, workflow, compute) and its integration with Cosmos subsystems. The post also outlines bridging workflows to manage the co-existence of Reloaded and Cosmos during migration, allowing VQS to serve both environments.