how to make transformation in mp4 vedio

i have two vedio of mp4.i want to apply some tranformation on it and run the tranform vedio.i have wriiten the code but contently facing the error.i even tried "NumberOfFrames" but it is unrecongnized in my matlab

code is here

% read videos
vid1 = VideoReader('video1.mp4');
vid2 = VideoReader('vedio2.mp4');

% read first frame from each video
frame1 = readFrame(vid1);
frame2 = readFrame(vid2);

% create a figure
fig = figure;

while hasFrame(vid1) && hasFrame(vid2)
    % read frames from each video
    frame1 = readFrame(vid1);
    frame2 = readFrame(vid2);
    
    % perform geometric transformations
    frame1_scaled = imresize(frame1, 0.5);
    frame1_sheared = imresize(frame1, [size(frame1,1) size(frame1,2)*0.8]);
    frame1_rotated = imrotate(frame1, 30, 'crop');
    
    frame2_scaled = imresize(frame2, 0.5);
    frame2_sheared = imresize(frame2, [size(frame2,1) size(frame2,2)*0.8]);
    frame2_rotated = imrotate(frame2, -30, 'crop');
    
    % concatenate frames
    combined_frame = cat(2, cat(1, frame1, frame1_scaled, frame1_sheared, frame1_rotated), ...
                          cat(1, frame2, frame2_scaled, frame2_sheared, frame2_rotated));
    
    % display frames
    imshow(combined_frame, 'Parent', fig);
    drawnow;
end

error that i facing is

Error using cat 
Dimensions 
of
arrays 
being
concatenated
are
not
consistent.

Error in untitled (line 27)
    combined_frame = cat(2, cat(1, frame1, frame1_scaled, frame1_sheared, frame1_rotated), ...