client

1. Get source of ortp from github,switch to branch 0.25-simulator-fix(version under 0.27 don’t depend on special shared library).

2. Build ortp by ./autogen.sh && ./configure && make or mkdir -p ortp.build && cd ortp.build && cmake .. && make -j8.

3. Install library to system by sudo make install.

4. Build test program by gcc -o rtpsend -lortp rtpsend.c.

5. Transmite stream g711 media by ./rtpsend xxx.g711 <ip> <port>

server

1. Install vlc for server.

2. Write a sdp file for g711 stream session, and open sdp file by vlc.

H214

1. Add support to H264 payload by add profile in ortp/src/avprofile.c by function av_profile_init.
2. Recompile ortp library.
3. Change ortp/src/tests/rtpsend.c to transmite H264 file by function rtp_session_set_payload_type.
4. Extract NALU from H264 file, pack NALU to RTP payload and send it.

Cross Compile

Using CMAKE_TOOLCHAIN_FILE of CMake.