gstreamer 관련 패키지 설치
sudo apt update
sudo apt install -y build-essential cmake git pkg-config libgtk-3-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
opencv와 opencv_contrib 모듈 로드
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git
빌드 디렉토리 생성
cd opencv
mkdir build
cd build
python3에서 사용할 수 있도록 cmake 명령 설정
cmake -D CMAKE_BUILD_TYPE=Release \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
-D WITH_GSTREAMER=ON \
-D WITH_FFMPEG=ON \
-D PYTHON3_EXECUTABLE=$(which python3) \
-D PYTHON3_INCLUDE_DIR=$(python3 -c "from sysconfig import get_paths as gp; print(gp()['include'])") \
-D PYTHON3_LIBRARY=$(python3 -c "from sysconfig import get_paths as gp; print(gp()['stdlib'])") \
-D PYTHON3_PACKAGES_PATH=$(python3 -c "from sysconfig import get_paths as gp; print(gp()['purelib'])") \
..
빌드 진행 후 설치
make -j$(nproc)
sudo make install
OpenCV 설치가 완료된 후, Python에서 GStreamer 지원이 활성화되었는지 확인
GStreamer: YES 표시되면 설치 완료
import cv2
print(cv2.getBuildInformation())