Unrecognized function or variable 'writevideo'.

hello guys

i'm getting this type of error: Unrecognized function or variable 'writevideo' in my following code :

close all

axis tight manual

A = imread('peppers.png');

vv=VideoWriter('C:\Users\User\Desktop\stage m2\test111.mp4','Archival');

vv.VideoCompressionMethod

open(video);

z=101;milieu=51;fi=0;

u=zeros(z,z);

v=zeros(z,z);

u(1,milieu)=1;

xsi=linspace(0,1,z);

for i=1:milieu

n=[-i+1:2:i-1];

nn=length(n);

m=[0:1:i-1];

mm=length(m);

for k=1:z

for n=2:nn-1

for m=1:milieu

v(m+1,n)=(2^-0.5)*((1i*u(m,n-1)*exp(1i*xsi(k)*(abs(u(m,n-1)).^2 ))+v(m,n-1))*exp(1i*xsi(k)*(abs(v(m,n-1)).^2 )));

u(m+1,n)=(2^-0.5)*((u(m,n+1)*exp(1i*xsi(k)*(abs(u(m,n+1)).^2 ))+1i*v(m,n+1))*exp(1i*xsi(k)*(abs(v(m,n+1)).^2 )))*exp(1i*fi*((-1)^m));

[n1,m1]=size(u);

theta= linspace(-2*pi,2*pi,m1);

qu= linspace(-2*pi,2*pi,n1);

subplot(2,2,2);

pcolor(qu/pi,theta/pi,(abs(fft2(v))));

colormap(jet)

shading interp

writevideo(vv,A);

end

end

end

end

close video

% any idea how to fix it how to download this function

Answer 1

[VBBV]

%if true
  writeVideo(vv,A)

[VBBV]

Matlab is case senstitive

[Rabih Sokhen]

thank you, it work now