The present invention relates to providing a method and/or an apparatus for transmitting/receiving a broadcast signal for a 3-dimensional (3D) broadcast service. The method for transmitting a broadcast signal according to one embodiment of the present invention comprises the steps of: downsampling each of a left picture frame, a right picture frame, a depth picture frame for the left picture frame and a depth picture frame for the right picture frame, and encoding a packed frame which packs at least one frame of the downsampled frames into one frame, generating a broadcast signal comprising signaling information for the encoded packed frame and a picture related to the packed frame; and sending the generated broadcast signal.

The present invention relates to providing a method and/or an apparatus for transmitting/receiving a broadcast signal for a 3-dimensional (3D) broadcast service. The method for transmitting a broadcast signal according to one embodiment of the present invention comprises the steps of: downsampling each of a left picture frame, a right picture frame, a depth picture frame for the left picture frame and a depth picture frame for the right picture frame, and encoding a packed frame which packs at least one frame of the downsampled frames into one frame, generating a broadcast signal comprising signaling information for the encoded packed frame and a picture related to the packed frame; and sending the generated broadcast signal.

A method performed by a first image display apparatus includes: obtaining a 360-degree image; displaying, on a first display included in the first image display apparatus, a first image corresponding to a first area of the 360-degree image; controlling a second image display apparatus to display a second image corresponding to a second area of the 360-degree image, the second area being adjacent to the first area.

A method performed by a first image display apparatus includes: obtaining a 360-degree image; displaying, on a first display included in the first image display apparatus, a first image corresponding to a first area of the 360-degree image; controlling a second image display apparatus to display a second image corresponding to a second area of the 360-degree image, the second area being adjacent to the first area.

A unified attractiveness prediction method is provided. The method includes receiving a plurality of videos and extracting at least one of metadata and view data from each of the plurality of received videos, wherein the metadata is information for describing video contents, and the view data is a total number of users who watch the video. The method also includes obtaining potential view amounts of the plurality of received videos and calculating impact factor scores of the plurality of received videos based on the potential view amounts, each impact factor score including a numerical score for indicating a degree of effectiveness of a corresponding video. Further, the method includes providing a video with a highest impact factor score based on the calculated impact factor scores.

A unified attractiveness prediction method is provided. The method includes receiving a plurality of videos and extracting at least one of metadata and view data from each of the plurality of received videos, wherein the metadata is information for describing video contents, and the view data is a total number of users who watch the video. The method also includes obtaining potential view amounts of the plurality of received videos and calculating impact factor scores of the plurality of received videos based on the potential view amounts, each impact factor score including a numerical score for indicating a degree of effectiveness of a corresponding video. Further, the method includes providing a video with a highest impact factor score based on the calculated impact factor scores.

According to an aspect, there is provided a digital television (DTV) data stream including program and system information protocol (PSIP) data associated with content of the DTV data stream, the PSIP data including a virtual channel table (VCT) and an event information table (EIT), the EIT comprising: a source identification field identifying a source of an associated event in a DTV data stream; an event identification field indicating an identification of the event; a start time field indicating a star time of the event; a title field indicating a title of the event; and a descriptor comprising: a descriptor tag identifying the descriptor as a genre descriptor; a descriptor length indicating a total length of the descriptor; and at least one category code for an associated event in a DTV data stream, each category code specifying genre, program type, or category information of the associated event, wherein the at least one category code specifies at least one of a set of basic categories.

Provided are a watermark adding method and apparatus, a storage medium and a device. The method includes steps described below. To-be-added watermark information is acquired, and a time offset is determined according to the watermark information; a video frame rate is acquired, and time information of a frame image in a video is determined according to the video frame rate; and offset processing is performed on the time information according to the time offset to add the watermark information to the video.

A method for providing a unique remote experience of a live event includes receiving in near real time at a headend processing system from a control center at an event location raw media data captured at a live event occurring at the event location. Copies of the raw media data from the headend processing system are disseminated in near real time to a plurality of server nodes of a geographically distributed content delivery network connected together via communication network. The raw media data is processed to produce one or more customized presentations of the live event in the form of streaming audio/video (A/V) files of one or more subsets of the raw media data pursuant to one or more data structures corresponding, respectively, to one or more subscriber accounts. The streaming A/V files are transmitted over a communication network to one or more respective subscriber presentation devices.

The embodiments of the present disclosure relate to the technical field of virtual reality, and disclose a free viewing method for a three-dimensional video and an electronic device. In some embodiments of the present disclosure, respective rotation matrices of a current viewpoint in three dimensional directions are calculated; a current viewing orientation is calculated according to the rotation matrices in the three dimensional directions and an original viewing orientation; an orientation matrix of a viewer is calculated according to the current viewing orientation; a three-dimensional video is played by using an inverse matrix of the calculated orientation matrix as a position of a three-dimensional video in the coordinate system of the viewer. Adopting the embodiments of the present disclosure enables the display of a three-dimensional video to automatically adapt to a current viewpoint position of a user along with free change of the position of the user.