Get width and height of a video frame

I am trying to exctract frames from an avi video and save each on an Array. The code is the following:

if true
 folder = fileparts(which('Field_adv_diff_2D.avi'));
movieFullFileName= fullfile(folder,'Field_adv_diff_2D.avi');
videoObject = VideoReader(movieFullFileName);
numberOfFrames = videoObject.NumberOfFrames;
for frame = 1:numberOfFrames
  thisFrame = read(videoObject,frame);
  info = imfinfo(thisFrame);
  w = info.Width;
  h = info.Height;
  processo=zeros(560,420,numberOfFrames);
  processo(:,:,frame)=thisFrame;
end
end

I get this error:

Error using imfinfo (line 81) Expected FILENAME to be one of these types:

char

Instead its type was uint8.

Error in Get_Frame_Color_and_Set (line 51) info = imfinfo(thisFrame);

So, how might I get Width and Height of a video frame witch is uint8 instead of char?

Many thanks

Answer 1

[Walter Roberson]

height = size(thisFrame,1) 
width = size(thisFrame, 2)

Note: in avi files, the frame size is always the same for all frames in a movie.

[Davide Magnelli]

Thanks, Now the issue returned is about dimension.

if true
 for frame = 1:numberOfFrames
  thisFrame = read(videoObject,frame);
  h = size(thisFrame,1);
  w = size(thisFrame,2);
  processo=zeros(h,w,numberOfFrames);
  processo(:,:,frame)=thisFrame;
end
end

Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Error in Get_Frame_Color_and_Set (line 57) processo(:,:,frame)=thisFrame;

The dimension of thisFrame is 420x560x3 uint8.

[Walter Roberson]

for frame = 1:numberOfFrames
  thisFrame = read(videoObject,frame);
  if frame == 1
    h = size(thisFrame,1);
    w = size(thisFrame,2);
    processo = zeros(h, w, 3, numberOfFrames);
  end
  processo(:, :, :, frame) = thisFrame;
end