How to apply detectHarrisFeatures to a video frame then recreate a new video using frames with detectHarrisFeatures

function [ RecreateVideo ] = convertVideoCorner( path )

    v = VideoReader(path);
    vidHeight = v.Height;
    vidWidth = v.Width;

    mov=struct('cdata',zeros(vidHeight,vidWidth,3,'uint8'),'colormap',[]);
    numFrames = get(v,'NumberOfFrames');

     for k=1:numFrames
        mov(k).cdata = read(v,k);
     end
     m = mov;

     for k=1:numFrames
        corners = detectHarrisFeatures(m(k).cdata);
        xf = plot(corners. selectStrongest(50));
        m(k).cdata = xf;
     end
end

After this, I just use the VideoWriter to create a new video(.avi) I know the code of the second for loop is not working, it is just the concept