matlab

2023-09-02 21:56| 来源: 网络整理| 查看: 265

matlab 读取摄像头并保存avi视频文件

代码：

%% %打开摄像头预览窗口 clc clear all close all % objects = imaqfind %find video input objects in memory % delete(objects) %delete a video input object from memory vid = videoinput('winvideo', 1, 'YUY2_640x480');%创建ID为1的摄像头的视频对象，视频格式是 YUY2_640x480，这表示视频的分辨率为640x480。 set(vid,'ReturnedColorSpace','rgb'); %设置色彩为rgb/grayscale %set(vid, 'ReturnedColorSpace', 'grayscale'); %% filename = 'test1'; %保存视频的名字 nframe = 300; %视频的帧数 nrate = 30; %每秒的帧数 preview(vid); set(1,'visible','off'); writerObj = VideoWriter( [filename '.avi'] ); writerObj.FrameRate = nrate; open(writerObj); figure; for i = 1:nframe frame = getsnapshot(vid); imshow(frame); f.cdata = frame; f.colormap = colormap([]) ; writeVideo(writerObj,f); end close(writerObj); closepreview

当出现以下错误时：

winvideo: The device associated with device ID 1 is already in use. A new videoinput object cannot be created for this device while it is in use.

添加这两句代码

% objects = imaqfind %find video input objects in memory % delete(objects) %delete a video input object from memory

这样就保存好了一个test1.avi视频文件。

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