- OpenCV => 3.4.3 - Operating System / Platform => Windows 64 Bit - Compiler => Visual Studio 2017 opencv 3.4.3, 3.4.1, 4.0 can't use cvsaveimage API example: IplImage* imgSrc = cvLoadImage("F:/123.png", CV_LOAD_IMAGE_COLOR); cvSaveImage("F:/222.jpg", imgSrc);