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c++rtp

RTP sequence extract

A RTP packet consists of a 12-byte RTP header and subsequent RTP payload The 3rd and 4th byte of the header contain the Most-Significant-Byte and Least-Significant-Byte of the sequence number of the RTP packet Seq Num= (MSB<<8)+LSB

char pszPacket[12];

...

long lSeq = ???? - How to get the sequence number from a packet?

Solution 
  • unsigned short seq = (packet[2] << 8) | packet[3];

    Note that this assumes packet is an array of unsigned char.