Abstract of the talk: This talk will dicuss baiscs of multimedia communications systems and methods, with emphasis on video compression and communications. Relevant international standards and standardization processes will be also be discussed. Ye-Kui Wang received his PhD degree in electrical engineering in 2001 from the Graduate School at Beijing, University of Science and Technology of China, Beijing, China. He is currently a Member of Research Staff in Nokia Research Center,Tampere, Finland. His research interests include video coding and transport, particularly doing those in an error resilient and scalable manner. Dr. Wang has been an active contributor to different standardization organizations, including ITU-T VCEG, ISO/IEC MPEG, JVT, 3GPP SA4, IETF and AVS. He has acted as an editor for several (draft) standard specifications, including ITU-T Rec. H.271, and the MPEG file format and the IETF RTP payload format for the scalable video coding (SVC) standard. He has also been a chair of the special session of Scalable Video Transport in the 15th International Packet Video Workshop (2006). He has co-authored about 200 technical standardization contributions and about 30 academic papers. In addition, Dr. Wang has co-invented over 60 issued and pending patents in the fields of multimedia coding, transport and application systems.