Matlab 基本视频操作

 1 clc;
 2 clear;
 3 video=mmreader(a.avi);
 4 nFrames = video.NumberOfFrames;  %得到帧数
 5 H = video.Height;                %得到高度
 6 W = video.Width;                  %得到宽度
 7 Rate = video.FrameRate;
 8 % Preallocate movie structure.
 9 mov(1:nFrames) = struct(‘cdata‘,zeros(H,W,3,‘uint8‘),‘colormap‘,[]);
10 
11 
12 %获取每一帧
13 for i = 1:nFrames
14     mov(i).cdata = read(video,i);
15     P = mov(i).cdata;
16 
17     %imresize() []中格式要求：[高 宽]
18 
19     Q = imresize(P,[720 960]);
20     disp(‘当前播帧数：‘),disp(i);
21     imshow(P),title(‘原始图片‘);%显示原始图片
22     31 end