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.
Average view	Average view	The number of minutes that users watched videos for the specified channel, content owner, video, or playlist.
Average view duration	Average view duration	The average length, in seconds, of video playbacks.
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.