It becomes possible to satisfactorily perform subtitle display in the reception side. A container of a predetermined format is transmitted, the container including a video stream including video data and a subtitle stream including text information of a subtitle, the text information including subtitle display position information for specifying a subtitle display position as a relative position with respect to a subtitle display range. Auxiliary information is inserted, into a container of the subtitle stream, to be used when the subtitles is displayed by using subtitle position information. For example, the auxiliary information is information regarding resizing processing, information for determining a subtitle display range, and the like.

A method and an apparatus for processing a high dynamic range (HDR) video including a subtitle, where the method includes: encapsulating HDR video data into a video data frame that matches a transmission interface; encapsulating subtitle information into a subtitle information frame that matches the transmission interface; and separately transmitting the video data frame and the subtitle information frame to a display device through the transmission interface, where the video data frame and the subtitle information frame are packets in two types of formats. According to the method provided in this application, content and subtitle information of a dynamic metadata HDR video are separately transmitted to the display device. In this way, the display device can obtain the separated video content and subtitle information, and then separately perform corresponding processing on the HDR video and a subtitle.

A subtitle encoding device for transmitting a bitmap subtitle for insertion in an image using a progressive type scan including a controller configured to: indicate, in an interlace subtitle system, that a top field block length is zero; and provide the bitmap subtitle in a bottom field of the interlace subtitle system.

Media content typically includes closed captioning information such as subtitled in domestic and foreign languages. Techniques and mechanisms provide that closed captioning information may be toggled on/off using menu options and preferences as well as automatically managed by intelligently monitoring the environment surrounding a device. Device sensors such as microphones and vibration monitors determine the noise level of an environment as well as the spectral characteristics of the noise to determine whether the noise profile would interfere with the video playback experience. A particular environmental noise profile could automatically trigger the display of closed captioning information or present an easy access, otherwise unavailable toggle to display closed captioning information associated with a video stream.

Systems and methods provide a solution to a common nuisance of loud background noise encountered when watching television, allowing the issue to be solved with little or no user interaction. Systems and methods automatically modulate device volume based on background noise level. The systems and methods record a background level of noise, and if that background level of noise increases, the systems and methods automatically increase the content volume which had been set by the user. Exceptions are made for brief sounds or for viewer conversations.

The present invention relates to a device and a method for transmitting and receiving a broadcast signal comprising a subtitling service. Provided in one embodiment of the present invention is a method for transmitting a broadcast signal, the method comprising the steps of: generating a broadcast signal comprising video data and subtitle data; and transmitting the generated broadcast signal. According to the embodiment of the present invention, a transport stream providing a digital broadcast subtitling service using an XML subtitle may be transmitted.

An object is to make it possible to perform caption display satisfactorily in a case where the caption display position is designated as a relative position.

The video stream is decoded to obtain video data, and the subtitle stream including the caption information is decoded to obtain bitmap data of the caption. The caption display position in the caption display position information included in the caption information is designated as a relative position with respect to the caption display range. In a case where the aspect ratio of the video area is different from the aspect ratio of the display video area, the caption display position is determined with the display video area defined as the caption display range, further resize processing is performed, and the display position control is performed onto the bitmap data of the caption on the basis of the caption display position that has undergone the resize processing. Bitmap data of the caption that has undergone display position control is superimposed on the video data to obtain display video data.

Disclosed herein are systems and methods for generating a video clip and associated closed-captioning (CC) data. An example method involves accessing a first video clip demarcated into frames; accessing CC data demarcated into CC blocks, identifying a starting frame from among the frames; determining a first set of frames that are within a range of the starting frame; determining a first set of CC blocks that correlate to the first set of frames; receiving a selection of a starting position from among the first set of CC blocks; identifying an ending frame among the frames; using the ending frame to identify an ending position; and generating a second video clip and associated CC data, wherein the second video clip includes the frames spanning from the starting frame to the ending frame, and wherein the generated CC data includes the CC blocks spanning from the starting position to the ending position.

A video subtitle display method and apparatus, the method including: determining, upon receiving a play request with regard to a target video, identification information indicated by the play request; evaluating whether a first subtitle display mode corresponding to the identification information exists; and displaying subtitles of a target video on a video picture of the target video during a process of playing the target video, based on a first subtitle display mode determined to exist corresponding to the identification information. Video subtitle display methods and apparatuses provided by example embodiments of the present disclosure enable a video subtitle display mode may change based on differences between first subtitle display modes corresponding to different identification information, satisfying viewing needs of different users for subtitles in video pictures.

Media content typically includes closed captioning information such as subtitled in domestic and foreign languages. Techniques and mechanisms provide that closed captioning information may be toggled on/off using menu options and preferences as well as automatically managed by intelligently monitoring the environment surrounding a device. Device sensors such as microphones and vibration monitors determine the noise level of an environment as well as the spectral characteristics of the noise to determine whether the noise profile would interfere with the video playback experience. A particular environmental noise profile could automatically trigger the display of closed captioning information or present an easy access, otherwise unavailable toggle to display closed captioning information associated with a video stream.