MATLAB Version: 2010a
OS: Windows 7
这段代码可将avi视频中的每一帧画面截取出来，并转存到单独的文件夹中。
PS：下面的是matlab代码。
1 clear;
2 clc;
3
4 % choose a video file
5 [filename, pathname] = uigetfile('*.avi', 'choose a video file', 'video.avi', 'Multiselect', 'on');
6
7 fprintf('filename = %s \npathname = %s \n\n', filename, pathname);
8
9 if ischar(filename)
10
11 fprintf('choose file success.\n\n');
12
13 video = mmreader([pathname filename]);
14 len = video.NumberOfFrames; % get length of the video
15
16 fprintf('length of video : %d \n\n', len);
17
18 dir=strcat(pathname,strrep(filename,'.avi',''),'\pic');
19 mkdir(dir); % create folder for saving picture
20 fn=strrep(filename,'.avi','');
21
22 for k = 1 : len - 1
23 frame = rgb2gray(read(video, k));
24 imwrite(frame,strcat(dir,'\',fn,'-avi-000',int2str(k),'.bmp'),'bmp');
25 end
26
27 end