| 摘要 |
<p>An apparatus to deliver video over an IP network uses multicast distribution and unicast correction or supplementation, and includes a video receiver module configured to receive one or more videos, formatted as IP packets, at a first server, a first module configured to stream the videos to a user over a first IP network using a multicast after a time delay, and a second module configured to stream the videos to a second server over a second IP network. The second server can be configured to transmit to a user over a third IP network IP packets of a video stream requested by the user to replace IP packets lacking in a corresponding time delayed multicast video stream received by the user over the first IP network, such that the requested IP packets being combined with the received multicast video stream to form a corrected video stream.</p> |
