How to start sending to clients with GOP packages (SPS, PPS, I-FRAME)

[Zerpico]

I used example/rtsp_h264_file.cpp as an example, but I want the server to start sending data to connected clients with GOP (including SPS, PPS and I-FRAME). How can I do that?

Maybe I should skip the data until I find the packets I need, or somehow I can control the source/parser or connection for each client.