INIT:
- rtpLastSeq: 1000
- rtpPreviousBaseSeq: 0
- rtpBaseSeq: 0
packet (SYNC):
- seq: 3000
- rtpPreviousBaseSeq: 1000
- rtpBaseSeq: 3000
out:
- rtpLastSeq: 3000 - 3000 + 1000 + 1 = 1001
packet:
- seq: 3001
out:
- rtpLastSeq: 3001 - 3000 + 1000 + 1 = 1002
packet:
- seq: 3003
out:
- rtpLastSeq: 3003 - 3000 + 1000 + 1 = 1004
packet (SYNC):
- seq: 4050
- rtpPreviousBaseSeq: 1004
- rtpBaseSeq: 4050
out:
- rtpLastSeq: 4050 - 4050 + 1004 + 1 = 1005
packet:
- seq: 4051
out:
- rtpLastSeq: 4051 - 4050 + 1004 + 1 = 1006
packet (DROP):
- seq: 4052
if (seq > rtpLastSeq)
- rtpBaseSeq++: 4051
packet:
- seq: 4053
out:
- rtpLastSeq: 4053 - 4051 + 1004 + 1 = 1007
probation packet:
- rtpLastSeq++ = 1008
out:
- rtpLastSeq: 1008
- rtpBaseSeq--: 4050
NOTE: probation packets should just be sent (assuming same RTP timestamp) after a video packet with marker bit set to 1.
packet:
- seq: 4054
out:
- rtpLastSeq: 4054 - 4050 + 1004 + 1 = 1009