Is it possible to get all comments for a video with the new (experimental) YouTube API v 3.0?
I only found how to get “activities” (in their terminology comment is a kind of activity) originating from a given account.
The api page says the api is not feature complete, so it is quite possible that functionality is not yet made available. Although I might’ve just missed it.
There’s no support for retrieving comments using v3 of the API. We can’t make any commitments to add in support for reading/writing comments at this time, so if your application depends on them, using v2 is required.