color video

Hi, I can't run it. Could you check it where error. Thank you!! The video is color and it 4-D unit8

clear all;
%obj1 = mmreader('can.avi');
%vid1 = read(obj1);

xx = zeros([128 128  1 207],'uint8'); 
for frame=1:207
  [xx(:,:,:,frame),map] = imshow('can.avi',frame);
end

save can xx

Answer 1

[Image Analyst]

I'm not sure what you want to do but whatever you're doing is weird. imshow() returns a handle to an axes, not an image and a colormap - maybe you got it confused with read(). But read() would be used with VideoReader(), not mmreader I think. Anyway mmreader is deprecated so you should follow the examples for VideoReader and VideoWriter instead. Use VideoReader or imwrite to handle imagery, not save.