我是否需要使用 Gstreamer 构建 OpenCV 才能在 OpenCV 中使用 Gstreamer

Question

I am trying to send cv::Mat frames via RTSP. I created a working project in Visual Studio using GStreamer using this gst-rtsp-server code. I am able to receive test video of GStreamer using VLC.

Now I am trying to send a video via OpenCV by reading it frame by frame using cv::VideoCapture

But my OpenCV is built without GStreamer support? How can I use the GStreamer library to send Opencv frames via RTSP?

Answer 1

To capture frames using OpenCV with gstreamer backend, you will need to build OpenCV with Gstreamer. Afterwards you will need to pass your apiPreference cv2.CAP_GSTREAMER as second argument to cv::VideoCapture() . For example: cv::VideoCapture(filename,cv::CAP_GSTREAMER) .