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公开(公告)号:US20090328124A1
公开(公告)日:2009-12-31
申请号:US12147512
申请日:2008-06-27
申请人: Gilles KHOUZAM , Donald KARLOV , Wenbo ZHANG , Federico SCHLIEMANN , Sam GEORGE , Mike HARSH
发明人: Gilles KHOUZAM , Donald KARLOV , Wenbo ZHANG , Federico SCHLIEMANN , Sam GEORGE , Mike HARSH
IPC分类号: H04N7/173
CPC分类号: H04N21/64738 , H04N21/234354 , H04N21/234363 , H04N21/234381 , H04N21/23439 , H04N21/44209 , H04N21/4621 , H04N21/47202 , H04N21/633 , H04N21/6373 , H04N21/6377 , H04N21/64769
摘要: A method for video playback switching in response to changing network conditions. The method includes accessing a server to retrieve respective index files for a low bit rate version and a high bit rate version of the video file, and instantiating a low bit rate media player and a high bit rate media. Playback of the video file is begun by the high bit rate media player streaming the high bit rate version from the server. Upon an indication of impeded network conditions, a transition point is selected, wherein the transition point indicates where downloading of the high bit rate version stops and where downloading of the low bit rate version begins. The low bit rate media player is then positioned to begin playback at the transition point. Playback of the video file is then switched to the low bit rate player upon encountering the transition point.
摘要翻译: 一种响应于网络条件变化的视频回放切换方法。 该方法包括访问服务器以检索用于低比特率版本和视频文件的高比特率版本的相应索引文件,以及实例化低比特率媒体播放器和高比特率媒体。 视频文件的播放由高比特率媒体播放器从服务器流式传输高比特率版本开始。 在有障碍的网络条件的指示时,选择转换点,其中转换点指示高比特率版本的下载停止并且开始低比特率版本的下载。 然后将低比特率媒体播放器定位成在转换点开始播放。 然后,当遇到转换点时,将视频文件的播放切换到低比特率播放器。