Wireshark · Wireshark-users: [Wireshark-users] why a tcp stream is split into many tcp flows

[esolve esolve <esolvepolito@xxxxxxxxx>]

I use tcpdump to capture video streaming and then use tcpflow to parse 
the captured packets. I notice that a tcp stream is split into many tcp 
flows, for the tcp flow names, for example, a tcp stream with receiver 
port  50552 is split into 11 flows, and in the names, the port number is
 changed to  50552,  50552c1,  50552c2,  50552c3,....etc

what is the reason for this?