It is easy to use getframe and videoWriter object. Here is an example from the videoWriter object help:
v = VideoWriter('peaks.avi');
open(v);
Generate initial data and set axes and figure properties.
Z = peaks;
surf(Z);
axis tight manual
set(gca,'nextplot','replacechildren');
Create a set of frames and write each frame to the file.
for k = 1:20
surf(sin(2*pi*k/20)*Z,Z)
frame = getframe;
writeVideo(v,frame);
end
close(v);
