nvarguscamerasrc OpenCV (Solved)

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
18

Hi Honey_Patouceul,
Thank you for sharing the link.
Do you mean somewhat like

#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(int argc, char** argv)
{
VideoCapture cap("rtspsrc location=rtsp://127.0.0.1:8554/test  latency=30 ! decodebin !  videoconvert ! omxh265enc bitrate=50000000 ! h265parse ! omxh265dec ! nvoverlaysink ! appsink ");
 if (!cap.isOpened())
    {
      cout << "Failed to open camera." << endl;
      return -1;
    }

  for(;;)
    {
      Mat frame;
      cap >> frame;
      Mat bgr;
      cvtColor(frame, bgr, CV_YUV2BGR_I420);
      imshow("original", bgr);
      waitKey(1);
    }

  cap.release();
}

and could it remove green artifacts and get picture more similar to the output of

gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test ! queue ! decodebin ! videoconvert ! xvimagesink

Thanks
that one doesn’t seem to open up pop up window.
Will try to combinate futher until the picture is better athan in screeshots attached to previous posts

./simple_opencv
NvMMLiteOpen : Block : BlockType = 279 
NvMMLiteBlockCreate : Block : BlockType = 279 
Allocating new output: 640x480 (x 10), ThumbnailMode = 0
OPENMAX: HandleNewStreamFormat: 3528: Send OMX_EventPortSettingsChanged: nFrameWidth = 640, nFrameHeight = 480 
Framerate set to : 0 at NvxVideoEncoderSetParameterNvMMLiteOpen : Block : BlockType = 8 
===== NVMEDIA: NVENC =====
NvMMLiteBlockCreate : Block : BlockType = 8 
NVMEDIA: H265 : Profile : 1 
NvMMLiteOpen : Block : BlockType = 279 
NvMMLiteBlockCreate : Block : BlockType = 279 
Allocating new output: 640x480 (x 10), ThumbnailMode = 0
OPENMAX: HandleNewStreamFormat: 3528: Send OMX_EventPortSettingsChanged: nFrameWidth = 640, nFrameHeight = 480

The terminal execution of gstreamer sequence seems fine. The quality issue arise when it is processed by the sample_opencv with rtsp
I mean that the line below returns fine video

VideoCapture cap("nvarguscamerasrc ! video/x-raw(memory:NVMM), width=1280, height=720,format=NV12, framerate=30/1 ! nvvidconv ! video/x-raw,format=I420 ! appsink");

but the line below seems to miss some parameters to return same quality video:

VideoCapture cap("rtspsrc location=rtsp://127.0.0.1:8554/test  latency=30 ! decodebin !  videoconvert ! appsink ");