Edit Question - KnowledgeHub

Title Body

I am trying to write a program to analyze emotional expressions like tears. As part of my tracker I am using OpenCV to record sample videos. Particularly, I am not certain about how to correctly choose FPS (10FPS seems like it ought to work). I am also not sure which Codec I should use on OS X, I have tried all possible CV_FOURCC from here as well but returned the following error: Stream #0.0: Video: rawvideo, yuv420p, 640x480, q=2-31, 19660 kb/s, 90k tbn, 10 tbc Assertion failed: (image->imageSize == avpicture_get_size( (PixelFormat)input_pix_fmt, image->width, image->height )), function writeFrame, file /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_opencv/work/OpenCV-2.2.0/modules/highgui/src/cap_ffmpeg.cpp, line 1085. Do you all have some working code with cvWriteFrame? Thanks for taking time to look at my problem! For those interested the entire program is: #include <cv.h> #include <cxcore.h> #include <highgui.h> int main (int argc, const char * argv[]) { CvCapture *capture; IplImage *img; int key = 0; CvVideoWriter *writer; // initialize camera capture = cvCaptureFromCAM( 0 ); // capture = cvCaptureFromAVI("AVIFile"); // always check assert( capture ); // create a window cvNamedWindow( "video", 1 ); int color = 1; // 0 for black and white // get the frame size CvSize size = cvSize((int)cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH),(int)cvGetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT)); writer = cvCreateVideoWriter(argv[1], -1 , 10 , size, color); while( key != 'q' ) { // get a frame img = cvQueryFrame( capture ); // always check if( !img ) break; cvWriteFrame( writer, img ); cvShowImage("video", im

Tags (comma-separated) Cancel