| 摘要 |
A system is provided for signaling receivers (370) to identify a customized set of coding tools used to encode a given video stream that need not conform to a predetermined profile of coding tools. In particular, an MPEG-4 video specific control packet (100) is provided for configuration of MPEG-4 video coding tools (200). The packet is transmitted along with the video stream, e.g., to facilitate the provision of streaming video, e.g., for multicast video over Internet protocol networks (350) and the like. Streaming video servers (305, 310, 315) encode the video stream with the control packet for use by video players (370) at a subscriber premises. The system takes advantage of a control packet that is already set up, avoids the need to establish an extra connection, and allows the use of a customized set of coding tools without requiring the complexity and expense of conforming to unneeded coding tools in a predetermined profile. In particular, the system is compatible with a Real-time Transport Protocol (RTP), defined in RFC 1889. |
