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Learning OpenCV from Scratch with C++

Reading Videos

Explore how to use OpenCV in C++ to read videos by capturing individual frames and displaying them sequentially. Learn to manage video playback using functions like VideoCapture and imshow, and understand how to handle both video files and webcam streams for practical applications.

We'll cover the following...

We’ll read a video as individual frames of images and display them in sequence. The lesson map is given below:

%0 node_1 Capture video node_2 Read frames from the video node_1->node_2 node_3 Display frames as videos node_2->node_3
Lesson map

Capture video

Now, we have to capture the video, and we use the VideoCapture capture(videoPath) method of the OpenCV library. We have to write the path of the video inside the parentheses.

C++
std::string videoPath = "/usercode/vid.mp4";
cv::VideoCapture capture(videoPath);

The videopath variable stores the complete path of the video. In our case, we’re going to read a video named vid.mp4 that’s stored in the /usercode/Resources/ folder. We can use the ...