Broadcast signal transmitting device, broadcast signal receiving device, broadcast signal transmitting method and broadcast signal receiving method
The present invention presents a method for transmitting a broadcast signal. The method for transmitting the broadcast signal, according to the present invention, presents a system capable of supporting next-generation broadcast services in an environment supporting a next-generation hybrid broadcast using a terrestrial broadcast network and the internet network. In addition, presented is an efficient signaling method capable of covering both the terrestrial broadcast network and the internet network in the environment supporting the next-generation hybrid broadcast.
1. A method of processing a picture for a video content generated based on a high efficiency video coding in a transmitter, the method comprising:
generating multiple supplement enhancement information (SEI) messages including a first SEI message and a second SEI message, signaling information in the first SEI message being applied to the video content while signaling information in the second SEI message being applied to a specific region only within the picture,
wherein the second SEI message comprises a first group of sub SEI messages and position information for identifying each of regions specified in the first group of sub SEI messages,
wherein the first group of sub SEI messages are used to apply to the each of regions within the picture, and
wherein a second group of sub SEI messages not included in the second SEI message are used to apply to all regions within the picture;
encoding the picture for the video content; and
transmitting the encoded picture with the multiple SEI messages over at least one network.
2. The method according to claim 1 , wherein the multiple SEI messages include type information for indicating a type of a plurality of pieces of metadata, information indicating the number of pieces of metadata having a type indicated by the type information, and information indicating whether all of multiple pieces of metadata need to be applied or only one piece of metadata from among the multiple pieces of metadata needs to be applied when the multiple pieces of metadata have a type indicated by the type information, and
the multiple SEI messages further include information on a position at which metadata having the type indicated by the type information is transmitted.
3. The method according to claim 2 , wherein the multiple SEI messages include information indicating whether metadata having a type indicated by the type information is metadata changing in predetermined units in the video content and information indicating whether the metadata having the type indicated by the type information needs to be updated.
4. The method according to claim 2 , wherein the multiple SEI messages include information indicating presence or absence of sub-types by which the multiple pieces of metadata having the type indicated by the type information are sub-divided, sub-type information for dividing the multiple pieces of metadata, and information on a position at which metadata having a sub-type indicated by the sub-type information is transmitted.
5. The method according to claim 1 , wherein the multiple SEI messages include information indicating whether all of multiple pieces of metadata have changed according to reset of a program.
6. A method of processing a picture for a video content generated based on a high efficiency video coding in a receiver, the method comprising:
receiving the picture with multiple supplement enhancement information (SEI) messages including a first SEI message and a second SEI message over at least one network, signaling information in the first SEI message being applied to the video content while signaling information in the second SEI message being applied to a specific region only within the picture,
wherein the second SEI message comprises a first group of sub SEI messages and position information for identifying each of regions specified in the first group of sub SEI messages,
wherein the first group of sub SEI messages are used to apply to the each of regions within the picture, and
wherein a second group of sub SEI messages not included in the second SEI message are used to apply all regions within the picture;
parsing at least one of the first group of sub SEI messages or the second group of sub SEI messages; and
decoding the picture for the video content based on the at least one of the first group of sub SEI messages or the second group of sub SEI messages.
7. The method according to claim 6 , wherein the multiple SEI messages include information indicating whether metadata having a type indicated by type information is metadata changing in predetermined units in the video content and information indicating whether the metadata having the type indicated by the type information needs to be updated.
8. The method according to claim 6 , wherein the multiple SEI messages include information indicating presence or absence of sub-types by which multiple pieces of metadata having a type indicated by type information are sub-divided, sub-type information for dividing the multiple pieces of metadata, and information on a position at which metadata having a sub-type indicated by the sub-type information is transmitted.
9. The method according to claim 6 , wherein the multiple SEI messages include information indicating whether all of multiple pieces of metadata have changed according to reset of a program.
10. A reception device for processing a picture for a video content generated based on a high efficiency video coding, the reception device comprising:
a receiver to receive the picture with multiple supplemental enhancement information (SEI) messages including a first SEI message and a second SEI message over at least one network, signaling information in the first SEI message being applied to the video content while signaling information in the second SEI message being applied to a specific region only within the picture,
wherein the second SEI message comprises a first group of sub SEI messages and position information for identifying each of regions specified in the first group of sub SEI messages,
wherein the first group of sub SEI messages are used to apply to the each of regions within the picture, and
wherein a second group of sub SEI messages not included in the second SEI message are used to apply to all regions within the picture;
a parser to parse at least one of the first group of sub SEI messages or the second group of sub SEI messages; and
a decoder to decode the picture for the video content based on the at least one of the first group of sub SEI messages or the second group of sub SEI messages.