# y800 VideoCapture issue

I am trying to process an Y800 encoded AVI file, but VideoCapture::retrieve returns false every time. VideoCapture::get(CV_CAP_PROP_FOURCC) tells me the code of the codec is 0, which makes me assume there is some issue with the codec? (I am an absolute beginner in the topic) I am using OS X 10.10.5, and the same code runs fine on other linux and windows machines. I have already seen this post: