I need to access the YouTube API, authenticating as a single account so I can access its videos, tags, comments, etc.
A Public API Access key does not seem to cover this scenario as tags aren't visible to the public. Is it necessary to implement OAuth just to authenticate one account? I have no intention of having other users authenticate with the web app - only the YouTube account that belongs to the owner of the web app.
I have the username & password for the YouTube account. Is there no way to authenticate one YouTube account with the API as a single-user?
A Service Account seems most suitable for me, but apparently the v3 API doesn't support them.