Method for transmitting and receiving program configuration information for scalable ultra high definition video service in hybrid transmission environment, and method and apparatus for effectively transmitting scalar layer information

The present invention relates to a method for transmitting and receiving program configuration information for a scalable ultra high definition (UHD) video service in a hybrid transmission environment, and to a method and apparatus for effectively transmitting scalar layer information. In particular, the present invention relates to a scheme for inserting group information for the scalable layer of a base layer and an enhancement layer, which form a scalable UHD video, and transmission channel information into a program map table (PMT) or a package configuration table (PCT), and for transmitting same, and to a scalable layer information format for transmitting layer information having a smaller number of bits for a scalable UHD video service when a packet header includes scalable layer information.