Writing AVI files in OpenCV

Question

There example on the net and code given in Learn OpenCv,Orielly.

After many attempts the out.avi file is written with 0 bytes. I wonder where i went wrong.

T

Answer 1

My bet is that cvCreateVideoWriter returns NULL. Just step through it to see if it's true. In that case, the problem is probably with CV_FOURCC(..) which doesnt find the codec and force a return 0;

you can try using -1 instead of CV_FOURCC. There is gonna be a prompt during runtime for you to chose the appropriate codec