如何使用json-c格式将视频上传到youtube？

I'm able to upload videos to youtube using their xml input/output format but their documentation on how to implement uploading with json-c is frustratingly sparse. For instance, what is the 'key' for the json data I'm sticking in the body? Or put a different way, how is the json string added to the body of the request?I'm able to upload videos to youtube using thei