摘要:
An apparatus and method for adapting a scalable video coding (SVC) bitstream is provided. The apparatus may include: a layer selection unit to select at least one quality layer from a plurality of quality layers contained in each of spatial layers of the SVC bitstream; a layer discarding unit to discard the at least one quality layer; and a layer dependency modification unit to modify a quality layer dependency between one or more quality layers remaining among the plurality of quality layers, or a spatial layer dependency between the plurality of spatial layers. Accordingly, it is possible to adapt the SVC bitstream where the entire quality of spatial layers is enhanced.
摘要:
A Medium Grained Scalability (MGS)-to-Advanced Video Coding (AVC) transform apparatus may modify an accumulated residual signal of at least one MGS layer of a key picture, included in an MGS-based Scalable Video Coding (SVC) bitstream, and rewrite the MGS-based SVC bitstream into an AVC bitstream.
摘要:
An apparatus for truncating fine granular scalability (FGS) data of a scalable video coding (SVC) video, the apparatus including: a rate-distortion (R-D) data extractor analyzing a bitstream to extract R-D data of at least one spatial layer; a user preference collector collecting user preference information associated with each spatial layer; a decision engine unit deciding an optimal bitrate of each spatial layer based on the R-D data and the collected user preference information; and a scaling engine unit truncating FGS data that does not correspond to the optimal bitrate of each spatial layer is provided.
摘要:
A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include a minBufferTime attribute indicating a minimum amount of initially buffered media content. A terminal may receive content from a server before playback of the content, and may buffer the content by at least the minimum amount. The metadata may include a range attribute that designates a range of a target indicated by a Uniform Resource Locator (URL). The terminal may receive bytes designated by the range attribute from the URL, and may play back the content using the received bytes.
摘要:
A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of media content are provided. The media content may include a sequence of one or more periods. The metadata may include a start time attribute and/or a duration attribute of each of the periods. The metadata may determine a start time of each of the periods, and a start time of each of segments included in each of the periods. A terminal may access segments included in each of the periods, may decode and render data of media content included in the segments, and may play back the media content.
摘要:
A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of content are provided. The metadata may include one or more BaseURL elements. Uniform Resource Locators (URLs) of segments forming media may be generated based on the BaseURL elements. Additionally, a URL of a segment may be generated by mapping a BaseURL element among the BaseURL elements to a sourceURL attribute of the segment. Segments indicated by generated URLs may be identical to each other.
摘要:
Provided is a method and apparatus for accessing service discovery metadata. Advance Internet Protocol Television (AIT) devices may access discovery metadata of different schemes using a generic protocol based on the moving picture experts group (MPEG) Extensible Middleware (MXM). According to the above access scheme, end-user devices, description service provider devices, and IPTV service provider devices may exchange metadata. Subsequent modification and addition of a metadata scheme may be supported.
摘要:
Provided is an apparatus and method for transmitting and receiving a streaming service. An inter-arrival jitter may correspond to a delay variation in arrival time between TCP packets arriving at an apparatus for receiving the streaming service. The apparatus for receiving the streaming service may determine a de-jitter buffering time to absorb a network jitter before TS packets in a TCP packet is input to a T-STD buffer model. Based on the de-jitter buffering time, an initial playout delay lime at the apparatus for receiving the streaming service may be determined.
摘要:
A method and apparatus for inserting scalability and view information into a Moving Picture Experts Group-2 (MPEG-2) Transport Stream (TS) header are provided. When a scalable video or multi-view video is transmitted using an MPEG-2 system, scalability information or view information regarding the scalable video or multi-view video in a payload in a TS level may be used. Using the scalability information or view information, the TS-packetized scalable video or multi-view video may be efficiently adapted to various terminal performances, various network characteristics, a specific user preference, and the like.
摘要:
A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of media content are provided. The media content may include a sequence of one or more periods. The metadata may include a start time attribute and/or a duration attribute of each of the periods. The metadata may determine a start time of each of the periods, and a start time of each of segments included in each of the periods. A terminal may access segments included in each of the periods, may decode and render data of media content included in the segments, and may play back the media content.