Here is the global VLS framework : Sequence diagram We can isolate 3 major parts : the "source" thread (Reader+Converter) which takes the data from the media and format them into TS packets. Here is a simplified sequence diagram to show what happens when a "start" command is sent through the telnet interface: Sequence diagram Sequence diagram The Packet Handler (C_SyncFifo) is shared between two threads: in one thread the Converter pushes TS packets in the fifo, and in another thread the Streamer pops them.