Video Analytics Lexicon

Active Users

Real-time number of Unique Users currently viewing the broadcast.

Appears in the Real-Time dashboard

Average Completion Rate (VOD)

Average percentage of completion, across all plays. Calculated for VOD only.
 Example: If a user once watched 20% of the video and the second time watched 80% of the video, the calculation will be:
  (20+80)/2 plays = 50% Avg. Completion Rate.

Calculated for VOD entries only.
 This metric is NOT calculated based on quartiles.
 This metric can be found in the following dashboards:

• Engagement
• Playlist
• Category
• User
• Session/Webcast Entry
• VOD Entry

Average Drop off Rate (VOD)

The average percentage of drop-off quartile (last quartile watched), across all plays. Calculated for VOD entries only.
  Example: If a user once watched 20% of the video and the second time watched 80% of the video, the calculation will be:
  (0+75)/2 plays = 37.5% Avg. Drop Off Rate.
  20% is calculated as 0 since the user didn’t reach the 25% milestone and 80% is calculated as 75% as the user passed the 3^rd quartile milestone.

Calculated for VOD entries only. This metric is calculated based on quartiles.

Average Latency Rate

Indicates the avg. of all users’ seconds view latency in the time that the stream is broadcasting compared to the latency in the view.

Appears in Real-Time dashboard

Avg. Bitrate

Indicates the quality of the video watched. Kaltura Player sends a beacon every 10 seconds with the viewed bitrate. The average bitrate is the average reported bitrate across all players. (sum of bitrate /number of view events with reported bitrate)

Appears in the Real-Time and Session/Webcast Entry dashboards

Avg. Buffer Rate

From the total amount of time viewed, the percent of time the player was buffering.

Appears in the Real-Time and Session/Webcast Entry dashboards

Avg. Live Engagement Rate, Avg. Engagement

The average percentage of total view time of unique viewers that have both the tab in focus and the sound on for the session, from the total viewed time for all unique viewers.

Appears in the Session/Webcast Entry / Real-Time dashboards

Avg. Min Viewed

The average of minutes viewed per play (total minutes viewed/total plays).

Appears in the Technology dashboard

Avg. View Time (User Dashboard)

The average of minutes viewed by the user, calculated by quartile, per play.

For VOD only. Appears in the User entry dashboard. This metric is calculated based on quartiles.

Downstream Bandwidth

Sum of downloaded video segments size / time to download video segments.

Appears in the Real-Time dashboard

Dropped Frame Rate

The average percentage of number of frames that weren't rendered.(Sum of reported dropped frames/number of view events that had a reported dropped frame

Appears in the Real-Time dashboard.

DVR Users

Number of Unique Users viewing content within the DVR window. (DVR includes the option to seek backwards and forward in the player during the live/simulive broadcast)

Appears in the Real-Time dashboard.

Engaged Users

Real-time percent of users from the active users, that have good or high engagement (where the tab is in focus and the audio is turned on).

Appears in the Real-Time dashboard.

Known Viewers

Number of Unique Users that had an active viewing action, and are either authenticated or registered (i.e. not anonymous viewers)
  Note that Player Impressions are not counted as a viewing action.

Appears in the Session/Webcast Entry dashboard.

Minutes Viewed

Minutes played across all viewers.

This metric is NOT calculated based on quartiles.
  It can be found in the following dashboards:

• Session/Webcast Entry dashboard applied to both VOD and live broadcast
• Real-Time dashboard applied to live broadcast

Minutes Viewed (VOD)

Total number of playback minutes played by the viewers, based on quartile milestones. Calculated for VOD entries only.
  Example: If a user watched 4 minutes from a 10-minute video it will be calculated as 2.5 minutes (25% milestone).

Calculated for VOD entries only. This metric is calculated based on quartiles. It can be found in the following dashboards:

• Engagement 
• Technology
• Geo-Location
• User
• Category
• Playlist
• VOD Entry

Played Entries

Video entries with at least one play event associated with them.

Player Impression

A player impression event is counted each time the player is loaded on the page

Plays

A play is counted when a user clicks the Play button to watch a video. If the player is set to auto-play, a play event will be counted when the player begins to play the video.

Pausing and resuming is not counted as additional Play events.

Top Served Flavor

Indicates the flavor that is mostly viewed in the broadcast being viewed. The transcoding profile is defined in the KMC.

With ABR playback, the viewed flavor changes based on the user’s network conditions and device used. Appears in Real-Time dashboard.

Top Video Score

Video Score is calculated by a proprietary formula, taking into account multiple parameters such as unique viewers, plays and avg. completion rate. 

Total Completion Rate (VOD)

Total percentage of the associated VOD watched per user, accumulated across all play sessions, excluding repetitions. For example: If the VOD is an hour and the user watched the first 20 minutes the first time and watched the first 30 minutes the second time, the total completion rate will be 50%. 

Calculated for VOD entries only. This metric can be found in the following dashboards:

• Session/Webcast Entry dashboard
• VOD Entry

Unique Authenticated Views

For a certain frame in the video how many unique views for all users.
   User can view the same time frame several times and will be counted as one unique view.

Appears in VOD Entry dashboard - “Views vs. Unique Authenticated Views by time” graph.
 The number appears when hovering the graph on a specific time frame. 

Unique Viewers

Number of Unique Users that had an active viewing action during the time period.
  Note that Player Impressions are not counted as a viewing action.

Player Impressions are not counted as a viewing action.

Views

For a certain time frame in the video, the number of total views across all users. 

Appears in VOD Entry dashboard - “Views vs. Unique Authenticated Views by time” graph.
 The number appears when hovering the graph on a specific time frame.