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    • 3. 发明申请
    • SERVER-BASED VIDEO STITCHING
    • 基于服务器的视频缝合
    • WO2017106749A1
    • 2017-06-22
    • PCT/US2016/067326
    • 2016-12-16
    • VUCLIP (SINGAPORE) PTE. LTD.
    • LI, MinghuiHUANG, YaochunSHEN, Bo
    • H04N21/20H04N21/858H04N21/235
    • H04N21/8586H04N21/2183H04N21/23424H04N21/2353H04N21/6175H04N21/845H04N21/85406H04N21/8547
    • Approaches, techniques, and mechanisms are disclosed for the server-based stitching of a sequence of video segments. According to one embodiment, rather than combining the segments together into a single video file, a server (e.g. a segment-based HTTP server) is configured to dynamically switch between streaming the different segments in the sequence. That is, for instance, as the server reaches the end of one segment, instead of terminating the streaming, the server retrieves the video data for the next segment and continues streaming content from the next segment. Thus, the server streams a sequence of multiple and distinct video segments from a single addressable location (e.g. a URL), rather than streaming the distinct video segments from separate addressable locations. To a client, the stream appears to be a single video stream, even though composed of audio/video data from separate and distinct files or sources.
    • 针对基于服务器的视频片段序列的拼接公开了方法,技术和机制。 根据一个实施例,服务器(例如基于段的HTTP服务器)被配置为在流式传输序列中的不同段之间动态切换,而不是将这些段合并成单个视频文件。 也就是说,例如,当服务器到达一个分段的末尾时,服务器不是终止流,而是检索下一个分段的视频数据,并继续从下一个分段流式传输内容。 因此,服务器从单个可寻址位置(例如,URL)流传送多个且不同的视频片段的序列,而不是从独立的可寻址位置流式传送不同的视频片段。 对于客户端来说,虽然视频流是由来自不同文件或来源的音频/视频数据组成的,但该视频流似乎是单个视频流。
    • 5. 发明申请
    • FORMING ONE OR MORE TILE STREAMS ON THE BASIS OF ONE OR MORE VIDEO STREAMS
    • 在一个或多个视频流的基础上形成一个或多个层流
    • WO2017029400A1
    • 2017-02-23
    • PCT/EP2016/069732
    • 2016-08-19
    • KONINKLIJKE KPN N.V.NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    • VAN BRANDENBURG, RayTHOMAS, EmmanuelVAN DEVENTER, Mattijs, Oskar
    • H04N21/2343H04N21/262H04N21/845H04N21/854
    • H04N21/26258H04N21/234345H04N21/23439H04N21/8455H04N21/8456H04N21/85406
    • Methods and systems are described for forming one or more tile streams comprising: providing media data of at least one composite video stream to the input of at least one encoder, the media data of said composite video stream representing video frames comprising an image region having one or more subregions, each of said one or more subregions comprising visual content of one of said one or more video streams; providing encoder information to said encoder for configuring said encoder to generate encoded media data representing tiled video frames, a tile in said tiled video frames matching at least one of said one or more subregions; encoding media data of said composite video stream, wherein media data associated with a subregion of a video frame are encoded into independently encoded media data that have no spatial decoding dependency on media data of other subregions in said video frame, said independently encoded media data forming a tile of a tiled video frame, preferably said tile being arranged in said image region on the basis of a tile grid; and, storing said encoded media data as one or more tile streams on a storage medium, preferably on a storage medium of one or more network nodes, a tile stream comprising media data of at least one tile and tile position information for signaling a decoder to decode the media data of said tile stream into tiled video frames comprising a tile at a position as indicated by the tile position information.
    • 描述了用于形成一个或多个瓦片流的方法和系统,包括:向至少一个编码器的输入提供至少一个复合视频流的媒体数据,所述复合视频流的媒体数据表示视频帧,包括具有一个 或更多子区域,所述一个或多个子区域中的每一个包括所述一个或多个视频流之一的视觉内容; 向所述编码器提供编码器信息,用于配置所述编码器以产生表示平铺视频帧的编码媒体数据,所述拼接视频帧中的瓦片与所述一个或多个子区域中的至少一个匹配; 编码所述复合视频流的媒体数据,其中与视频帧的子区域相关联的媒体数据被编码为对所述视频帧中的其他子区域的媒体数据没有空间解码依赖性的独立编码媒体数据,所述独立编码的媒体数据形成 平铺的视频帧的瓦片,优选地,所述瓦片基于瓦格格布置在所述图像区域中; 并且将所述编码的媒体数据作为一个或多个瓦片流存储在存储介质上,优选地在一个或多个网络节点的存储介质上,包括至少一个瓦片的媒体数据的瓦片流和用于将解码器信令的瓦片位置信息 将所述瓦片流的媒体数据解码为平铺的视频帧,所述平铺视频帧包括如由瓦片位置信息所指示的位置处的瓦片。