Abstract: A method and apparatus are disclosed for generating a video bitstream for high-resolution video streaming. The present disclosure in some embodiments provides a method and apparatus for generating a video bitstream by encoding a video at a different bit rate for each of video areas, in order to efficiently transmit a large amount of high-resolution video contents.

Abstract: Disclosed herein are a QTBT split structure allowing blocks of various shapes capable of more efficiently reflecting various local characteristics of video and a method of efficiently signaling the split structure.

Abstract: Disclosed are a method of encoding a video, including determining a motion vector resolution of a current block, determining a motion vector of the current block according to the motion vector resolution of the current block, predicting and encoding current block using a motion vector of the current block, and encoding information on the motion vector resolution of the current block.

Abstract: The present invention relates to efficient signaling of an intra prediction mode for predicting a current block in intra prediction coding. According to an aspect of the present invention, a video encoding apparatus divides dozens of intra modes into groups, selects a group to which an actual intra mode of the current block to be encoded belongs, and signals a value corresponding to the group. The video decoding apparatus acquires information on the group to which the actual intra mode of the current block belongs from a bit-stream and then evaluates intra modes belonging to the group to select a final intra mode.

Abstract: Disclosed herein is a method of encoding prediction information about a current block located in a first face to be encoded in encoding each face of a 2D image onto which 360 video is projected. The method includes generating prediction information candidates using neighboring blocks around the current block; and encoding a syntax element for the prediction information about the current block using the prediction information candidates. When a border of the current block coincides with a border of the first face, a block adjoining the current block based on the 360 video rather than the 2D image is set as at least a part of the neighboring blocks.

Abstract: A method and apparatus are disclosed for generating a video bitstream for high-resolution video streaming. The present disclosure in some embodiments provides a method and apparatus for generating a video bitstream by encoding a video at a different bit rate for each of video areas, in order to efficiently transmit a large amount of high-resolution video contents.

Abstract: An apparatus for and a method of extracting a video segment from a multiplexed video are disclosed. According to some aspects of the disclosed embodiment, an apparatus, service and method for video selection/extraction are provided for when a service provider delivers a video sized greater than the screen of a user-owned device without a separate conversion, in order to extract predefined video areas in real time from the user device for a customized display on the device display screen, or extract from a network gateway or streaming server in real time the predefined video areas for a customized delivery to meet the specification of the terminal that ordered the video segment, or upon receiving user's navigated and selected video location from the terminal, extract the video segment and enlarge specified location and provides multifaceted viewing experiences for the user.

Abstract: An apparatus of generating a combined video stream of multiple images, includes: an image acquiring unit to acquire a plurality of individual video streams transmitted over multiple channels; an image information extracting unit to extract individual image codes and individual header information from each of the plurality of the individual video streams; and a bit stream generating unit to generate combined image codes by inserting individual image codes into corresponding respective positions corresponding to each of the plurality of individual video streams in a predetermined layout of a display picture, generate combined header information corresponding to the combined image codes based on respective individual header information, and generate a combined video stream including the combined image codes and the combined header information.

Abstract: An apparatus of generating a combined video stream of multiple images, includes: an image acquiring unit to acquire a plurality of individual video streams transmitted over multiple channels; an image information extracting unit to extract individual image codes and individual header information from each of the plurality of the individual video streams; and a bit stream generating unit to generate combined image codes by inserting individual image codes into corresponding respective positions corresponding to each of the plurality of individual video streams in a predetermined layout of a display picture, generate combined header information corresponding to the combined image codes based on respective individual header information, and generate a combined video stream including the combined image codes and the combined header information.

Abstract: A system and method for performing source buffering to transmit a real-time encoded scalable video to multiple transmission groups are provided. A streaming system for providing a scalable video bitstream for each multicast group may include an encoder source buffer to receive a scalable video bitstream and to store the received scalable video bitstream, and a plurality of subgroup transmitters, each to receive data of different layers in the stored scalable video bitstream from the encoder source buffer, to packetize the received data, and to transmit the packetized data to a terminal.

Abstract: Multimedia content is provided continuously for multiple users each potentially moving to a different place while enjoying it together. The system includes a network for transmitting preferably IP-format data, a first device for outputting particular multimedia content received through the network, and a second device for outputting a second multimedia content prepared for, and received upon requesting, continuous provision of the particular multimedia content through the network. A contents server delivers the particular multimedia content and the second multimedia output to the first and second devices, respectively. The second multimedia content consists of the part of the particular multimedia content remaining to be transmitted at the point of time at which the second device requested the continuous provision of the particular multimedia content.

Abstract: Multimedia content is provided continuously for multiple users each potentially moving to a different place while enjoying it together. The system includes a network for transmitting preferably IP-format data, a first device for outputting particular multimedia content received through the network, and a second device for outputting a second multimedia content prepared for, and received upon requesting, continuous provision of the particular multimedia content through the network. A contents server delivers the particular multimedia content and the second multimedia output to the first and second devices, respectively. The second multimedia content consists of the part of the particular multimedia content remaining to be transmitted at the point of time at which the second device requested the continuous provision of the particular multimedia content.