视频文件为空，使用cvWriteToAVI - OpenCv [英] video file is empty using cvWriteToAVI - OpenCv

问题描述

嗨
我有一些代码可以使用cvWriteToAVI函数（来自OpenCV）在c ++中将图像流保存到视频文件中，我的操作系统是Ubuntu，它工作得很好，

但是因为一些问题我重新安装了ubuntu并安装了所有需要的东西（我想是这样）：

OpenCV，codeBlocks，Buildessential，libavformat-dev和其他库

但是相同的代码没有现在工作，我的意思是其他部分没关系，除了cvWriteToAVI（）函数
我的代码中的
我首先创建视频文件（也适用）



代码：

Hi I had some code to save stream of images into a video file using cvWriteToAVI function (from OpenCV) in c++ and my OS was Ubuntu and it worked perfectly,
But because of some problems I reinstalled ubuntu and installed all needed things(I think so):
OpenCV , codeBlocks , Buildessential , libavformat-dev and other libs
but that same code doesn't work now, I mean other parts are okay except cvWriteToAVI() function
in my code I first create the video file(which works too)

code :

CvSize size = cvSize(640,480);
int codec = CV_FOURCC('M', 'J', 'P', 'G');
CvVideoWriter* writer = cvCreateVideoWriter("video",codec,30,size);

// Get an image (works okay)
IplImage* image = ardrone.getImage();

//shows the image here
cvShowImage("camera", image);

cvWriteToAVI(writer,image);       // seems this line doesn't work!

任何帮助都会受到赞赏

any help would be appreciated

推荐答案

使用



cvWriteFrame（作家，图片）;



而不是



cvWriteToAVI（作家，图片）;



可能有效。

Use

cvWriteFrame(writer,image);

instead of

cvWriteToAVI(writer,image);

may works.

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