Exploring youtube's API and I cannot tell if it's possible to upload videos of users into the site's youtube channel directly.
I did manage to upload a video to youtube but that video would be uploaded under the uploader rather than the sites channel. used this question:
The answer is in the documentation you linked to:
The onBehalfOfContentOwnerChannel parameter specifies the YouTube channel ID of the channel to which a video is being added
Unfortunately, it also points out:
Note: This parameter is intended exclusively for YouTube content partners.
The criteria for becoming a "content partner" is available in this overview of the program.
