This Recommendation specifies the architecture and protocols of the multi-algorithm scheduling (MAS) systems for artificial intelligence (AI)-based multimedia applications, which meet the requirements and framework of MAS systems specified in [ITU-T F.748.36]. The MAS systems consist of the scheduling unit, the algorithm warehouse unit, and the computing power resource management unit. The MAS systems schedule multiple algorithms (multi-type, multi-version, or from multiple providers) across heterogeneous computing power resources based on specific tasks on-demand. This Recommendation is intended to guide the design, development, implementation, and application of MAS systems.