| 摘要 |
<p>In the transmission of streams of data, such as coded video, staggercasting, in which a primary and a secondary stream are transmitted at some relative time offset (i.e., “staggered”), allows a receiver to pre-buffer frames of the secondary stream to replace frames of the primary stream that may have been lost in transmission. In an illustrative implementation, staggercasting is performed in which the secondary stream contains a subset of the coded video frames transmitted in the primary stream. The primary stream contains reference frames, which are essential to properly decoding the video data, as well as disposable frames which are not. The secondary stream, however, contains copies of the reference frames and may contain copies of some of the disposable frames or no disposable frames at all. When frames of an interleaved stream of the primary and secondary streams are lost, such an arrangement will allow reconstruction at the receiver of an uninterrupted video stream at a temporarily reduced frame rate.</p> |
