| 摘要 |
Systems and methods for error resilient transmission and for random access in video communication systems are provided. Embodiments disclosed include a system for decoding compressed digital video that is coded using a technique that provides two or more temporal layers, wherein compressed video pictures are structured into one or more packets, the system comprising: a packet header containing data elements that indicate: for the lowest temporal level pictures, a sequence number identifying the pictures, for other temporal level pictures, a reference to the sequence number of the most recent, in decoding order, lowest temporal level picture, so that a receiver can detect loss of a lowest temporal level picture by examining if the picture corresponding to the referenced picture frame index is available at the receiver. |
