retrieve information of timestamp using 'preview'

Hi, I use 'preview' in order to see my videoinput from a USB camera. In the plot of the preview Timestamp is visible, but how can the data of timestamp be extracted to a vector? The idea is such that the only each 20 seconds a frame is recorded using snapshot.

clear all; close all; clc; camList = webcamlist % Connect to the webcam. cam1 = webcam(1) cam2 = webcam(3) preview(cam1); preview(cam2);

Answer 1

[Malu]

[ frames, timestamps] = getdata(vidObj); % here you are acquiring the data from your video object

save('frames.mat','frames') ;

save('timestamps.mat','timestams');

you can save them as a matrix.