Ok, I stream camera from my device (Jetson Nano) using :
cv::VideoWriter gst_udpsink("appsrc ! video/x-raw, format=BGR ! queue ! videoconvert ! video/x-raw, format=BGRx ! nvvidconv ! nvv4l2h264enc insert-vui=1 ! video/x-h264, stream-format=byte-stream ! h264parse ! rtph264pay pt=96 config-interval=1 ! udpsink host=224.1.1.1 port=5000 auto-multicast=true", cv::CAP_GSTREAMER, 0, fps, cv::Size (width, height));
I installed OpenCV with Gstreamer(following that ) and tried that command
c:\gstreamer\1.0\msvc_x86_64\bin\gst-launch-1.0.exe udpsrc uri=udp://224.1.1.1:5000 auto-multicast=true ! application/x-rtp, media=video, encoding-name=H264 ! rtpjitterbuffer latency=300 ! rtph264depay ! decodebin ! d3dvideosink
it is working, unfortunately, no matter what latency I set I still got quite a big lag.
When I try to use OpenCV
cv::VideoCapture cap("udpsrc uri=udp://224.1.1.1:5000 auto-multicast=true ! application/x-rtp, media=video, encoding-name=H264 ! rtpjitterbuffer latency=300 ! rtph264depay ! decodebin ! videoconvert ! video/x-raw, format=BGR ! appsink", cv::CAP_GSTREAMER);
I get
[ WARN:0] global F:\Code\opencv_4.5.1\opencv-4.5.1\modules\videoio\src\cap_gstreamer.cpp (734) cv::GStreamerCapture::open OpenCV | GStreamer warning: Error opening bin: no element "udpsrc"
[ WARN:0] global F:\Code\opencv_4.5.1\opencv-4.5.1\modules\videoio\src\cap_gstreamer.cpp (501) cv::GStreamerCapture::isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been created
And .isOpened() give me false.
I’m don’t know why did I install something wrong?
I added everything to my PATH as instructed
