How to write multiple images as a video file using MATLAB?

% Select input image folder

image_folder = uigetdir('F:\','Select input image folder');
filenames=dir(fullfile(image_folder,'*.tiff'));
display(filenames(1));
total_images=numel(filenames);

% Select output image folder
op_im_folder = uigetdir('F:\','Select output image folder');

% Define video writer
videoPathName = strcat(op_im_folder,'\Video',datestr(now,'yyyymmddTHHMMSS'),'.avi');
writerObj = VideoWriter(videoPathName,'Uncompressed AVI');
writerObj.FrameRate = 2;
open(writerObj);

figure;
for n = 2:10
    full_name = fullfile(image_folder,filenames(n).name);
    input_image = imread(full_name);

    % Do image processing here. output_image = result of processing

    imagesc(output_image);colormap(gray);
    frame = getframe;
    writeVideo(writerObj,frame);
end

% Close video writer object
close(writerObj);

disp('Operation completed');