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This document mainly introduces OS08A10 MIPI Camera. The document is divided into two parts,The first part of the document describes how to connect. The second part introduces How to record video via Gstreamer and test your camera under Ubuntu.
The reverse connection will damage the camera, please check the connection of the picture carefully before connecting.
There are two versions of VIM4, they are VIM4 and New VIM4, as they have different ISP IP core, so the usage of MIPI camera is also different, please follow the documentation to identify your VIM4 version and choose the right documentation for your VIM4.
Please check the documentation to identify your VIM4 version.
Please follow the documentation to upgrade your system to latest version.
Please follow the documentation to upgrade your system to latest version.
The video node for MIPI camera is /dev/video50
.
Follow the steps below to install Gstreamer Encoder Plugin:
sudo apt update sudo apt install gstreamer-aml
Record Video:
gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV21,width=3840,height=2160,framerate=30/1 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
Follow the steps below to install OpenCV:
sudo apt update sudo apt install libopencv-dev python3-opencv
Get Frame via V4l2:
#include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <opencv2/core/core.hpp> #include <iostream> #include <string> using namespace cv; using namespace std; int main(int argc, char** argv) { int count=100; string str = argv[1]; string res=str.substr(10); VideoCapture capture(stoi(res), CAP_V4L2); capture.set(CAP_PROP_FOURCC, VideoWriter::fourcc('U','Y','V','Y')); capture.set(CAP_PROP_FRAME_WIDTH, 3840); capture.set(CAP_PROP_FRAME_HEIGHT, 2160); while (count) { Mat frame; capture >> frame; if (frame.empty()) { break; } int h = frame.rows; int w = frame.cols; const char *name = "video"; namedWindow(name, 0); imshow(name, frame); waitKey(30); count--; } return 0; }
Get Frame via Gstreamer:
#include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <opencv2/core/core.hpp> #include <iostream> #include <string> using namespace cv; using namespace std; int main(int argc, char** argv) { int count=100; string str = argv[1]; string gstformat = "NV12"; string gstfile = "v4l2src device=" + str + " ! video/x-raw,format=" + gstformat + ",width=3840,height=2160,framerate=30/1 ! videoconvert ! appsink"; VideoCapture capture(gstfile); while (count) { Mat frame; capture >> frame; if (frame.empty()) { break; } int h = frame.rows; int w = frame.cols; const char *name = "video"; namedWindow(name, 0); imshow(name, frame); waitKey(30); count--; } return 0; }
Compile:
gcc -o mipi mipi-camera.cpp -lopencv_imgproc -lopencv_core -lopencv_videoio -lopencv_imgcodecs -lopencv_highgui -std=c++11 -std=gnu++11 -Wall -std=c++11 -lstdc++ -I/usr/include/opencv4
Test:
./mipi /dev/video50