| 摘要 |
A method and systems are provided for transmitting encoded video data over a packet switched network, by: (i) providing a plurality of encoded copies of video data, each encoded at a bitrate different from that of the others; (ii) transmitting one of the copies encoded at a first bitrate from a first end of a communication channel towards a second end of the communication channel; (iii) receiving the encoded copy at the second end and detecting the channel error rate associated therewith; (iv) at the first end, providing an indication associated with the detected error rate to enable transmitting from the first end another encoded copy having a different bitrate; and (v) transmitting a second copy encoded at a second bitrate, wherein the second bitrate is substantially equal to a maximal rate at which that encoded copy is recoverable at the second end with no noticeable apparent errors. |
