Broadcasting signal transmission and reception method and device
The present invention relates to a device and method for transmitting and receiving a broadcasting signal including a subtitle service. An embodiment of the present invention provides a broadcasting signal transmission method comprising the steps of: generating a broadcasting signal including video data and subtitle data; and transmitting the generated broadcasting signal. According to an embodiment of the present invention, a transmission stream providing a digital broadcasting subtitle service using XML subtitles can be transmitted.
1. A method of processing a high efficiency video coding (HEVC) video content in a transmitter, the method comprising:
generating a supplemental enhancement information (SEI) message,
the SEI message including both of first information for representing that the SEI message is applied to one picture and second information for representing that at least one of a minimum luminance value, a maximum luminance value or an average luminance value of the HEVC video content is present,
the SEI message further including at least one of the minimum luminance value, the maximum luminance value or the average luminance value based on the second information for representing that at least one of the minimum luminance value, the maximum luminance value or the average luminance value in the HEVC video content is present, and
the SEI message further including synchronization information for representing a time at which the luminance values are applied to the encoded HEVC video content;
encoding the SEI message and multiple pictures including the one picture; and
transmitting bitstreams for the encoded SEI message and the encoded multiple pictures.
2. The method according to claim 1 , wherein the SEI message further includes type information for representing an application range of the luminance values.
3. A method of processing a high efficiency video coding (HEVC) video content in a reception device, the method comprising:
receiving an encoded supplemental enhancement information (SEI) message and encoded multiple pictures including one picture;
decoding the encoded SEI message and the encoded multiple pictures including the one picture,
the SEI message including both of first information for representing that the SEI message is applied to the one picture and second information for representing that at least one of a minimum luminance value, a maximum luminance value or an average luminance value of the HEVC video content is present,
the SEI message further including at least one of the minimum luminance value, the maximum luminance value or the average luminance value based on the second information for representing that at least one of the minimum luminance value, the maximum luminance value or the average luminance value in the HEVC video content is present, and
the SEI message further including synchronization information for representing a time at which the luminance values are applied to the decoded HEVC video content; and
outputting the HEVC video content based on the SEI message.
4. The method according to claim 3 , wherein the SEI message further includes type information for representing an application range of the luminance values.