This example shows how to acquire multiple image frames from an IP camera, and log the images to an AVI file using MATLAB® VideoWriter.
Create an object,
cam, using the URL of the IP camera. The
URL is for a Motion JPEG (
mjpeg) over the HTTP stream. For
more information about finding the URL, see Tips for Finding the IP Camera URL.
cam = ipcam('http://172.28.17.104/video/mjpg.cgi')
cam = Display Summary for ipcam: URL: 'http://172.28.17.104/video/mjpg.cgi' Username: '' Password: '' Timeout: 10
ipcam function creates the object and connects it to
the IP camera with the specified URL. The camera used in this example does not
require user authentication. If your camera does, see Connect with User Authentication to
create the object with user name and password.
Optionally, preview the image from the camera.
The preview window opens and displays live video stream from your camera. For
more information about the preview window, see the
You can close the preview window at any time.
VideoWriter object to open an AVI file for
vidWriter = VideoWriter('frames.avi'); open(vidWriter);
Acquire and store 20 frames. This loop writes the acquired frames to the specified AVI file for future processing.
for index = 1:20 % Acquire a single frame. Image = snapshot(cam); % Write frame to video. writeVideo(vidWriter, Image); end
Release the camera by clearing the object.