Youtube API v3 enables developers to retrieve specific information regarding a particular video, among the returned data a part called topicDetails can be requested as per the following example:
Request:https://www.googleapis.com/youtube/v3/videos?id=7lCDEYXw3mM&part=snippet,topicDetailsResponse:{"kind": "youtube#videoListResponse","etag": "\"r3ahjFekUqNiL0By9B5wQ2uTZHM/i4Bt9XfY8YZ1ctSlg8BWcLD8HFQ\"","items": [ {"id": "7lCDEYXw3mM","kind": "youtube#video","etag": "\"r3ahjFekUqNiL0By9B5wQ2uTZHM/hYUGsnkhqATV4OXNG43HIObqlyw\"","snippet": {"title": "Google I/O 101: Q&A On Using Google APIs", [ some properties have been omitted here ],"categoryId": "28" },"topicDetails": {"topicIds": ["/m/045c7b","/m/0z5n","/m/04136kj" ] } } ]}The topicIds field comes machine encoded and topic information can be retrieved through the Freebase API (using this identifiers) which is being deprecated. I was unable to locate any update on YouTube documentation regarding the impact of freebase API deprecation and as I manage a large node.js code base that relies heavily on YouTube topicDetails I would like to ask if there is any known programatic alternative to recover topic information from stable sources other than Freebase?
