Discontinuity in Continuity Counter Query

[thatsmohitag]

According to H.222.0 when a Discontinuity in Continuity Counter Occurs in a Elementary Stream Data TS Packet then payload of same packet begins with an Access Unit Start.

I just could not understand what does the Broadcaster tries to signal by setting this Flag? How is it a Discontinuity and should the Demuxer reject this packet or accept it.


Consider this:

CASE 1

1)<ES_PID_Packet><AU End>
2)<Next_ES PID_Packet><DI = 1><New AU Start>

OR

CASE 2

1)<ES_PID_Packet><AU MID>
2)<Next_ES PID_Packet><DI = 1><New AU Start>

DI-Discontinuity Indicator


If its case 2 then Demuxer has to Reject the first packet ,but if its case 1 then Demuxer must accept both the Packets.


Thanks
Mohit