reading inbuilt MATLAB video and saving every fifth frame to C: drive frames folder

reading inbuilt MATLAB video and saving every fifth frame to C: drive frames folder
clear all;
videoObject = mmreader('xylophone.mpg');
nFrames = videoObject.NumberOfFrames;
OutputPath='C:/frames/';
mkdir(OutputPath);
for i=1:nFrames
if(mod(i,5) == 0)

fileName=strcat(OutputPath,int2str(i),'.jpg');
frameRead = read(videoObject, i);  
imwrite(frameRead,fileName);

end
end