It takes so long --> many frames

vid=VideoReader("Pokus č 4. (1).avi")
while hasFrame(vid)
    frame=readFrame(vid);

            numberOfFrames = vid.NumFrames;
        framesToRead = 1: 4000 : numberOfFrames;
        for k = 1 : length(framesToRead)
            % Extract the frame from the movie structure.
            thisFrame = read(vid, framesToRead(k));

            gray=im2gray(thisFrame);
            nHood=true(3); 
            Rpokus=rangefilt(gray,nHood);
            
            Rpokus=medfilt2(Rpokus,[7 7]);
            
            Rpokus=imfill(Rpokus,"holes");
            
            
            
            SE=strel("disk",6);
            Rpokus=imclose(Rpokus,SE);
            
            
            Rpokus=imbinarize(Rpokus);
            
            Rpokus = bwareaopen(Rpokus, 200); %vše tvořený méně než "n" pixely se odstraní
            
            
            Rpokus=imclearborder(Rpokus);
            
            
            clear edge
            Rpokus=edge(Rpokus);
            imshow(Rpokus)
        end
        pause(0.1)
end

Hi, I have a problem, I have video with more than 100 000 frames. But it still take a long time and also it does not work at all a mean the segmentation. Please help

[Sai]

Hi Eliska,

Can you please send the video file (Pokus č 4. (1).avi) so that I could try to to reproduce the issue at my end?