function [Y,U,V]=read_video(filename,height,width,length)

fid=fopen(filename,'r');
e=fread(fid);
fclose(fid);
t=1;
for k=1:1:length
    
    for i=1:1:height
        for j=1:1:width
            Y(i,j,k)=e(t);
            t=t+1;
        end
    end
    
    for i=1:1:(height/2)
        for j=1:1:(width/2)
            U(i,j,k)=e(t);
            t=t+1;
        end
    end
    
    for i=1:1:(height/2)
        for j=1:1:(width/2)
            V(i,j,k)=e(t);
            t=t+1;
        end
    end
    
end