| 摘要 |
<p>Disclosed is a method and device for streaming media data representing a media item (e.g. a video) from a server to a client device in which at least a temporal segment of the media item is represented by several versions. The client sends a request, 650, to the server for a description file (such as a Media Presentation Description or MPD file) that includes a description of the different versions and respective pointers (such as a URL) to the said versions. In response to this request the server selects, 653, data from the sets of data pointed to in the description file and sends, 655, the description file to the client device. In addition the server pushes, 657, 658, the selected data to the client device. The client correspondingly receives the description file and the selected data that is sent unsolicited from the server. The invention can be applied to video streamed using the Dynamic Adaptive Streaming over http (DASH) standard.</p> |
