Lost or dropped packets are the most common cause of CC errors.
The continuity counter (CC) is a 4 bit sequence number used to identify each MPEG-2 TS packet. A CC error is a break in the sequence numbers ( 1, 2, 3, 4, X, 6, 7, etc) and indicates a problem with the MPEG-2 transport stream packets themselves caused by any one of the following conditions:
Out of sequence packet
Duplicate packet on a per packet identifier (PID) basis