Repository for OpenCV's extra modules
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#include <opencv2/v4d/v4d.hpp>
#include <opencv2/v4d/nvg.hpp>
using namespace cv;
using namespace cv::viz;
constexpr int WIDTH = 1280;
constexpr int HEIGHT = 720;
int main(int argc, char** argv) {
string hv = "Hello Video!";
Ptr<V4D> v4d = V4D::make(Size(WIDTH, HEIGHT), "Video Editing");
//Make the video source
Source src = makeCaptureSource(argv[1]);
//Make the video sink
Sink sink = makeWriterSink(argv[2], VideoWriter::fourcc('V', 'P', '9', '0'), src.fps(), Size(WIDTH, HEIGHT));
//Attach source and sink
v4d->setSource(src);
v4d->setSink(sink);
v4d->run([=]() {
//Capture video from the Source
if(!v4d->capture())
return false; //end of input video
v4d->nvg([=](const Size& sz) {
using namespace cv::viz::nvg;
fontSize(40.0f);
fontFace("sans-bold");
fillColor(Scalar(255, 0, 0, 255));
textAlign(NVG_ALIGN_CENTER | NVG_ALIGN_TOP);
text(sz.width / 2.0, sz.height / 2.0, hv.c_str(), hv.c_str() + hv.size());
});
v4d->write(); //Write video to the Sink
return v4d->display(); //Display the framebuffer in the native window
});
}