Google Youtube organic metrics & dimensions

Metric name in Adloop	Metric name in Source	Definition
Views	Views	The number of times that a video was viewed. In a playlist report, the metric indicates the number of times that a video was viewed in the context of a playlist.
Comments	Comments	The number of times that users commented on a video.
Likes	Likes	The number of times that users indicated that they liked a video by giving it a positive rating.
Dislikes	Dislikes	The number of times that users indicated that they disliked a video by giving it a negative rating.
Shares	Shares	The number of times that users shared a video through the Share button.
Subscribed	Subscribed	The number of times that users subscribed to a channel.
Unsubscribed	Unsubscribed	The number of times that users unsubscribed from a channel.

Dimension name in Adloop	Dimension name in Source	Definition
Video ID	Video ID	The ID of a YouTube video.
Playlist ID	Playlist ID	The ID of a YouTube playlist.
Channel ID	Channel ID	The ID for a YouTube channel.