There must be a key "entries", which is a list, an iterable, or a PagedList
object, each element of which is a valid dictionary by this specification.
- Additionally, playlists can have "title", "description" and "id" attributes
- with the same semantics as videos (see above).
+ Additionally, playlists can have "id", "title", "description", "uploader",
+ "uploader_id", "uploader_url" attributes with the same semantics as videos
+ (see above).
_type "multi_video" indicates that there are multiple videos that