To save an animation in a video file such as an AVI file, we can use VideoWriter object. Code 1 shows a MATLAB script that saves the animation of a moving point of Section 3 in an AVI file. In order to get a desirable result, the time step (Time data) and the property values of the VideoWriter object may have to be adjusted appropriately.
% animation_point_videowriter.m clear; close all; % Create motion data t = 0:0.005:1; % Time data x = sin(2*pi*t); % Position data % Draw initial figure figure(1); h = plot(x(1), 0, 'o', 'MarkerSize', 20, 'MarkerFaceColor', 'b'); xlim([-1.5,1.5]); ylim([-1.5,1.5]); % Create & open video writer vw = VideoWriter('animation_point.avi'); vw.Quality = 100; vw.FrameRate = 60; open(vw); % Animation loop for i = 1:length(x) set(h, 'XData', x(i)); drawnow; % Write each frame to video frame = getframe(gcf); writeVideo(vw, frame); end % Close video writer close(vw);
