Source Packet Tagging Source Packets are tagged with an FEC Payload ID, indicating The source block number for the packet The source symbol the SPI for the packet starts at FEC Payload ID field defined by FEC Scheme and appended to the packet by the FEC Streaming Framework Note that FECFRAME may support other ways of identifying source packets in specific contexts e.g. RTP Sequence Number – FEC Schemes can specify different ways |