因为从pip 下载的公开仓库的 opencv-python 并不包含 gstreamer 的调用，所以要使用opencv  + gstreamer 需要自行build opencv 并把 gstreamer build 进去。 编译方法如下： 安装gstreamer sudo apt-get install gstreamer1.0* sudo apt install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev 编译opencv mkdir build cd build cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D INSTALL_C_EXAMPLES=OFF \ -D PYTHON_EXECUTABLE=$(which python3) \ -D BUILD_opencv_python2=OFF \ -D CMAKE_INSTALL_PREFIX=$(python3 -c “import sys; print(sys.prefix)”) \ -D PYTHON3_EXECUTABLE=$(which python3) \ -D PYTHON3_INCLUDE_DIR=$(python3 -c “from distutils.sysconfig import get_python_inc; print(get_python_inc())”) \ -D PYTHON3_PACKAGES_PATH=$(python3 -c “from distutils.sysconfig import get_python_lib; print(get_python_lib())”) \ -D WITH_GSTREAMER=ON \ -D BUILD_EXAMPLES=ON ..