问在MATLAB中剪切视频？

EN

%frame by frame processing of video files
clear all;
close all;
clc;
mov=VideoReader('C:\Users\Syd_R\OneDrive\Desktop\entrap\holo_bright_10_MMStack_Pos0.ome.avi');
vidFrames=read(mov);
nFrames=mov.NumberOfFrames;

A=vidFrames(:,:,1);

for fr=1:nFrames
    
    set(0,'DefaultFigureVisible','off')
    elseX=vidFrames(:,:,fr); 
     
if exist('position')==0
ROI1
else
imshow(elseX)
I2 = imcrop(elseX,[position(:,1) position(:,2) position(:,3) position(:,4)]);
end


mycell_h(fr)={I2};

end

close all;
set(0,'DefaultFigureVisible','on')

% This file should be saved (as ROI1.m) in the same path as this file will be called while executing the main file

% ROI
if exist('A')==1;
figure, imshow(A);
h = imrect(gca,[10 10 512 512]); 
 position = wait(h); % returns coordinates in "position" when user doubleclicks on rectangle
figure, imshow(A)
I2=imcrop(A,position);
    phROI2=I2;
    figure(11);
    imshow(phROI2);
    imwrite(phROI2, 'roi', 'tiff')
end;

imshow(mycell_h{1,1})