iPhone and OpenCV
- by gn-mithun
Hello,
I am writing an application to create a movie file from a bunch of images on an iPhone. I am using OpenCv. I downloaded openCv static libraries for arm(iPhones native instruction architecture) and the libraries were generated just fine. There were no problems linking to them libraries.
As a first step, i was trying to create a .avi file using one image, to see if it works. But cvCreateVideoWriter always returns me a NULL value. I did some searchin and i believe its due to the codec not being present. I am trying this on the iPhone simulator. this is what i do...
(void)viewDidLoad {
[super viewDidLoad];
UIImage *anImage = [UIImage imageNamed:@"1.jpg"];
IplImage *img_color = [self CreateIplImageFromUIImage:anImage];
//The image gets created just fine
CvVideoWriter *writer = cvCreateVideoWriter("out.avi",CV_FOURCC('P','I','M','1'), 25,cvSize(320,480),1);
//writer is always null
int result = cvWriteFrame(writer, img_color);
NSLog(@"\n%d",result);
//hence this is also 0 all the time
cvReleaseVideoWriter(&writer);
}
I am not sure about the the second parameter. What sort of codec or what exactly it does...
I am a n00B in this. Any suggestions?
