我用来学习GStreamer的程序，内部有多个demo，只依赖GStreamer，可以自己编译并运行、调试和学习。
依赖：GStreamer
sudo apt install \
libssl1.0.0 \
libgstreamer1.0-0 \
gstreamer1.0-tools \
gstreamer1.0-plugins-good \
gstreamer1.0-plugins-bad \
gstreamer1.0-plugins-ugly \
gstreamer1.0-libav \
libgstrtspserver-1.0-0 \
libjansson4=2.11-1编译：
mkdir build
cd build
cmake ..
make运行：
./demo_1_version_
./demo_2_init_
./demo_3_element_fac_
./demo_4_get_element_info_
./demo_5_link_elements_
./demo_6_pads_
./demo_8_helloworld_
./demo_gstreamer_rtsp_