GNIP is an add on for Twitter Analytics that provides social insights including: Video Views, Impressions, Replies

Without GNIP Enabled:

Public Engagements: Sum of Likes+ Retweets
Likes:
Times a user liked the Tweet
Retweets: Times a user retweeted the Tweet

With GNIP Enabled:

Public Engagements: Sum of Likes+ Retweets+ Replies
Media Engagements:
This includes the number of clicks on your media across videos, vines, gifs and images.  
Tweet Engagements:
Total number of times a user interacted with a Tweet. Clicks anywhere on the Tweet, including Retweets, replies, follows, likes, links, cards, hashtags, embedded media, username, profile photo, or Tweet expansion.
Engagement Rate:
Likes + Retweets + Replies on the post divided by the total followers on the account, expressed as a percentage.
Replies:
Times a user replied to the Tweet
Likes:
Times a user liked the Tweet
Favorites: A count of how many times the Tweet has been favorited.
Impressions*: Times a user is served a Tweet in timeline or search results
Video Views*: The total number of times the video has been viewed, based on the MRC standard of 100% of the video in view for at least two seconds.  
Media Views*:
This includes all views (autoplay and click) of your media counted across videos, vines, gifs and images.  
URL Clicks: A count of how many times a URL in the Tweet has been clicked.
App install attempts: Clicks to install an app via the Tweet's Card
App Opens: Clicks to open an app via the Tweet's Card
Detail expands:
Clicks on the Tweet to view more details
Follows:
Times a user followed you directly from the Tweet
Hashtag clicks:
Clicks on hashtag(s) in the Tweet
User profile clicks:
Clicks on the name, @username, or profile photo of the Tweet author
Permalink clicks:
Clicks on the Tweet permalink (desktop only)
Shared via email: Times a user emailed the Tweet to someone

 * The Twitter API only provides organic views and impressions.  

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