| 摘要 |
<p>The invention concerns a method of transferring a real-time stream, in particular an uncompressed video stream, in a network of subscriber stations. Furthermore, the invention also relates to a source device for transferring a real-time stream as well as a destination device. More particularly, the invention deals with a method for transferring a real-time uncompressed video stream between a source device S_DEV and a destination device D_DEV connected through a network. The video stream is composed by sequence of video frame VFk, where k is a Video Frame index. According to the invention, the method comprises steps of : - decomposing video frames VFk into a number N2 of video sub-frames VSFk,p,q, where N is an integer, and p and q are indexes for identifying video sub- frames, p and q being both comprised between 1 and N; - arranging video sub- frame VSFk,p,q in payload of RTP packets; - sending the RTP packets on the network; - receiving the RTP packets; detecting a loss of RTP packet whose payload contains a part of one of the video sub- frame VSFk,p,q; when no packet loss is detected, recomposing transferred video frames Vk from payload of received packets; when a packet loss is detected, recomposing transferred video frames Vk from payload of received packets, payload of lost packet being replaced by interpolations of payloads of received packets.</p> |
