| abstract |
An apparatus for transmitting broadcast signals, an apparatus for receiving broadcast signals, a method for transmitting broadcast signals, and a method for receiving broadcast signals are disclosed. A method for transmitting a broadcast signal includes: generating a first packet including broadcast content data; generating a second packet including the first packet, wherein the second packet includes a fixed header, an extended header having a variable length, and a payload including the first packet, wherein the fixed header includes a packet type element for identifying a category of the first packet and an indicator part element for identifying a construction of the payload; generating a broadcast signal including the second packet; and transmitting the broadcast signal. |