MATLAB: How to write a video from png files and/or matlab figures

movievideo

Hello,
I've been trying to write a simple code that takes a sequence of images and makes a video from them. However, the video file always ends up empty or unreadable, and I have no idea why the code isn't working. This is the code : 
video23 = VideoWriter('video23.avi');
%video23.FrameRate = 1;
open(video23);
 
baseN = 'VectorOverlay';
d = '_';
e = 'Individual.png';
f = '-';
 
for i = 1:87
    file_name = [baseN,d,num2str(i),f,num2str(i+1),d,e];
    %VectorOverlay_1-2_Individual.png from PIV analysis
    im = imread(file_name);
    figure(1)
    image(im)
    writeVideo(video23, im);
    
end
close(video23)    
implay(video23);
Can someone help me? I also have the images saved as Matlab figures, but matlab won't recognize the file format when I try and get it to read the files.

Best Answer

Try modifying your call to writeVideo to this:
       currFrame = getframe(gcf);
       writeVideo(vidObj,currFrame);
HTH
Related Question