Method and apparatus for broadcast signal transmission

A method for adjusting output packet provision timing of a stream generation device, wherein the stream generation device providing an output stream including output packets to a decoding device, the method comprising:

• obtaining a first output packet and a second output packet;
• assigning a first multiplexing time to the first output packet and a second multiplexing time different than the first multiplexing time to the second output packet;
• multiplexing the first output packet and the second output packet based on the first multiplexing time and the second multiplexing time;
• and
• providing the multiplexed first output packet and second output packet as the output stream to the decoding device,
• wherein a timing that the first output packet and the second output packet are provided to the decoding device is adjusted such that an error related to the first output packet and the second output packet does not occur in the decoding device,
• wherein the first output packet and the second output packet are preset to be obtained at a first bitrate, and
• wherein the first multiplexing time and the second multiplexing time are adjusted such that the timing that the first output packet and the second output packet are provided to the decoding device is adjusted, when the first output packet and the second output packet are obtained at a second bitrate different than the first bitrate.