After reading depth information video file of Kinect as binary(.dat) file, my resulting frames are not proper

I read the file until the end, try to store it frame by frame into array, but somehow I have got no successful representation of the video. I am going to put some screenshots also, if it is not clear.

I could not get it why the video is shaped into this much distorted form. By the way, I do not know what the meaning of pixel precision, and by assigning it into uint8, and I need some more elaborated explanation for struct creation and the definitive meaning for cdata. Thanks in advance, sorry for the confusing explanation, but I myself am unfortunately confused.

P.s.: Here are the screenshots:

[1]:http://i.stack.imgur.com/be8Q5.png

[2]:http://i.stack.imgur.com/3CLVL.png

   fid = fopen('depth.dat');
   col = 640; 
   row = 480;
   frames = {}; %// Put Frames
   numFrames = 0; %// Number of frames
   while (true) %// end of file
       B = fread(fid, [col row],'uint8=>uint8'); %// Read in one frame at a time
       if (isempty(B))
          break;
       end
       frames{end+1} = B.'; %// Transpose 
       numFrames = numFrames + 1; %// Count frame
       %imwrite(frames{numFrames},sprintf('Depth_%03d.png',numFrames));
   end
    movieFrames(numFrames) = struct('cdata',[],'colormap',[]);
    for idx = numFrames: 1
      img = frames{idx};
      movieFrames(idx) = im2frame(cat(3,img, img, img));
    end
      figure;
      imshow(movieFrames(1).cdata); %// figure size
      movie(movieFrames, 1, 30);  
      fclose(fid);