Multimedia services are becoming increasingly useful for education, video-based marketing, digital museum, E-health, etc., providing an enriched user experience in e-meetings, distance training and product demonstrations. Digital twin realizes the interconnection, intercommunication and interoperability between the physical world and the digital world, constructs the description, diagnosis, prediction and decision-making of the physical world in the virtual world. At present, the digital twin system in different multimedia services has common requirements and functions, and it is necessary to develop a digital twin platform to realize the services for upper multimedia applications. The digital twin platform provides general services, twin services, interactive services for multimedia applications such as the fields of education, video-based marketing, digital museum, E-health, etc. This Recommendation specifies the requirements and functional architecture of digital twin platform for supporting multimedia services.