I am trying to open the camera using GSTREAMER through OpenCV 4.4.0 CUDA version Environment: Jetson NX development board Jetpack 4.5.1 CUDA 10.2 OpenCV 4.4.0 GPU version C++ Code: std::string public_url = “rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov”; cv::VideoCapture cap; bool ok = cap.open(public_url,cv::CAP_GSTREAMER); if (!cap.isOpened()) throw std::runtime_error(“Source is not open”); Code never reaches line number 4 and following the output Opening in BLOCKING MODE NvMMLiteOpen : Block : BlockType = 261 NVMEDIA: Reading vendor.tegra.display-size : status: 6 NvMMLiteBlockCreate : Block : BlockType = 261 OpenCV 4.4.0 build from source on NX as per the NVidia opencv_install_jetson script. Build log General configuration for OpenCV 4.4.0 ===================================== – Version control: unknown – Extra modules: – Location (extra): /home/workspace/opencv_contrib-4.4.0/modules – Version control (extra): unknown – Platform: – Timestamp: 2021-05-07T17:53:10Z – Host: Linux 4.9.201-tegra aarch64 – CMake: 3.10.2 – CMake generator: Unix Makefiles – CMake build tool: /usr/bin/make – Configuration: RELEASE – CPU/HW features: – Baseline: NEON FP16 – required: NEON – disabled: VFPV3 – C/C++: – Built as dynamic libs?: YES – C++ standard: 11 – C++ Compiler: /usr/bin/c++ (ver 7.5.0) – C++ flags (Release): -fsigned-char -ffast-math -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG – C++ flags (Debug): -fsigned-char -ffast-math -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG – C Compiler: /usr/bin/gcc-7 – C flags (Release): -fsigned-char -ffast-math -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG – C flags (Debug): -fsigned-char -ffast-math -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG – Linker flags (Release): -Wl,–gc-sections -Wl,–as-needed – Linker flags (Debug): -Wl,–gc-sections -Wl,–as-needed – ccache: NO – Precompiled headers: NO – Extra dependencies: m pthread cudart_static -lpthread dl rt nppc nppial nppicc nppicom nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda/lib64 -L/usr/lib/aarch64-linux-gnu – 3rdparty dependencies: – OpenCV modules: – To be built: alphamat aruco bgsegm bioinspired calib3d ccalib core cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking video videoio videostab xfeatures2d ximgproc xobjdetect xphoto – Disabled: python2 python3 world – Disabled by dependency: - – Unavailable: cnn_3dobj cvv hdf java js julia matlab ovis sfm ts viz – Applications: apps – Documentation: NO – Non-free algorithms: NO – GUI: – GTK+: YES (ver 2.24.32) – GThread : YES (ver 2.56.4) – GtkGlExt: NO – VTK support: NO – Media I/O: – ZLib: /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.11) – JPEG: /usr/lib/aarch64-linux-gnu/libjpeg.so (ver 80) – WEBP: build (ver encoder: 0x020f) – PNG: /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.6.34) – TIFF: /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 / 4.0.9) – JPEG 2000: build Jasper (ver 1.900.1) – OpenEXR: build (ver 2.3.0) – HDR: YES – SUNRASTER: YES – PXM: YES – PFM: YES – Video I/O: – DC1394: YES (2.2.5) – FFMPEG: YES – avcodec: YES (57.107.100) – avformat: YES (57.83.100) – avutil: YES (55.78.100) – swscale: YES (4.8.100) – avresample: NO – GStreamer: YES (1.14.5) – v4l/v4l2: YES (linux/videodev2.h) – Parallel framework: pthreads – Trace: YES (with Intel ITT) – Other third-party libraries: – Lapack: NO – Eigen: YES (ver 3.3.4) – Custom HAL: YES (carotene (ver 0.0.1)) – Protobuf: build (3.5.1) – NVIDIA CUDA: YES (ver 10.2, CUFFT CUBLAS FAST_MATH) – NVIDIA GPU arch: 75 – NVIDIA PTX archs: – cuDNN: YES (ver 8.0.0) – OpenCL: YES (no extra features) – Include path: /home/workspace/opencv-4.4.0/3rdparty/include/opencl/1.2 – Link libraries: Dynamic load – Python (for build): /usr/bin/python2.7 – Java: – ant: NO – JNI: NO – Java wrappers: NO – Java tests: NO – Install to: /usr/local – – Configuring done – Generating done Could you please help me with this? X86_64 Platform GSTREAMER capture through OpenCV is working fine 2. NX-ARM64 is not working

After I changed the code #include #include #include #include #include #include int main(){ std::string url = "rtspsrc location=rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov latency=200 ! queue ! rtph264depay ! h264parse ! nvv4l2decoder enable-max-performance=1 drop-frame-interval=1 ! nvvidconv ! video/x-raw(memory:NVMM),format=BGRx ! queue ! nvvidconv ! video/x-raw,format=BGRx ! videoconvert ! video/x-raw,format=BGR ! videorate max-rate=30 drop-only=true average-period=5000000 ! video/x-raw,framerate=30/1 ! appsink sync=true"; cv::VideoCapture cap; cap.open(url, cv::CAP_GSTREAMER); cv::Mat frame; while(true){ bool ok = cap.read(frame); if (!ok){ break; } std::cout << "Reading Frame" ; // cv::imshow("Streaming", frame); //cv::waitKey(1); } //cv::destroyAllWindows(); return 0; } as per the discussion https://github.com/opencv/opencv/issues/15948#issuecomment-631472116 following is the output Opening in BLOCKING MODE Opening in BLOCKING MODE Nothing happens after that.

Moving to the Jetson Xavier NX forum.

Jetson Xavier NX - RTSP camera open issue

Robotics & Edge Computing Jetson Systems Jetson Xavier NX

DaneLLL May 13, 2021, 1:48am 5

Hi,
Please check if you can run this python sample:
Doesn't work nvv4l2decoder for decoding RTSP in gstreamer + opencv - #3 by DaneLLL

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Jetson Xavier NX - RTSP camera open issue

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