OpenCV imwrite 2.2 causes exception with message “OpenCV Error: Unspecified error (could not find a writer for the specified extension)” on Windows 7

Question

I\'m porting an OpenCV 2.2 app from Unix (that works) onto Windows 7 64-bit and I receive the following exception when cv::imwrite is called

\"OpenCV Error: Unspecif

Answer 1

Try

cvSaveImage("test.jpg", &(IplImage(image)));

instead of

imwrite("test.jpg", image);

This is a known bug in the version you are using.