Kaltura analyzes data collected as your viewers engage with a specific Webcasting entry. Each metric is defined below, along with its method of calculation.
| System name | Descriptive/friendly name | Definition |
| user_id | User ID | Unique user ID for the user. |
| user_name | User Name | First name + last name of the user. |
| registered | Registration Status | Registration status of the user. |
| count_loads | Player Impressions Count | Number of player impressions. A player impression event is counted each time the player is loaded on the page. |
| count_plays | Total Plays Count | Total number of plays. |
| count_plays_25, count_plays_50, count_plays_75, and count_plays_100 | count_plays_25, count_plays_50, count_plays_75, and count_plays_100 | These count plays are calculated by the play-through quartiles (25, 50, 75, 100). Each time a user will watch through the 25%, 50%, 75% or 100% point of the video, a play count event will be counted. For example, if a video is 10 seconds long, when a user watched the 25th second, there is a count. |
| sum_view_period | Total Minutes Viewed (Interval-Based*) | View time calculated from events sent every 10 seconds during VOD and live streams (excluding meetings). |
| sum_live_view_period | Live Minutes Viewed (Interval-Based) | Measured using events triggered every 10 seconds, filtered to include only live streams. |
| avg_live_buffer_time | Average Live Stream Buffering Rate | Total of all buffer times divided by the view period view time. |
| total_completion_rate | Total Completion Rate (Interval-Based*) | Number of percentiles viewed per user. |
| live_engaged_users_play_time_ratio | Live Engagement Rate | Calculated by dividing the amount of play time marked as "engaged" by the total play time (excludes meeting). |
