A list of all the metrics from the Bitmovin Analytics dashboard, including a description of the metric and how it is sorted in the dashboard. If there is no explanation about the sorting included, the metric is sorted by the metric itself in a descending way.
## Audience metrics
| Name of the metric | Sorted by | Description |
| Plays | Plays | We count a `Play` whenever a user pressed play and consequently saw at least one frame of a video. |
| Play Attempts | Play Attempts | `Play Attempts` count the number of viewers that have pressed the play button to attempt to play a video. |
| Unique Users | Unique Users | `Unique Users` shows the number of unique users that saw at least one frame of a video. |
| Concurrent Viewers | Concurrent Viewers | `Concurrent Viewers` shows the number of viewers that saw at least one frame of a video during the same time interval. |
| Total Page Loads | Page Loads | `Total Page Loads` reports the number of page loads during a time interval. Important to note here is that a page load can coincide with multiple player loads. Even if two players are loaded we only count one `Page Load`. |
| Total Hours Watched | Hours Watched | `Total Hours Watched` is the total amount of video hours consumed by all viewers during the selected timeframe. |
| Average View Time | Average View Time | `Average View Time` shows the average time viewers have watched a single content piece. Breakdowns for this metric are sorted by `Average View Time`. |
## Quality of experience metrics
| Name of the metric | Sorted by | Description |
| Total Startup Time | Startups | `Total Startup Time` is the sum of `Player Startup Time`, `Video Startup Time` and if applicable also `DRM Load Time`. It measures the time from player load to the first frame. Be aware that this is not a fully sequential process as viewers will spend time on the page before they press play. The time a user has spent on the site without any action is not included in the metric. <br> Breakdowns for` Total Startup Time` are sorted by the number of startups. Startups might differ from the total number of plays, as more plays can be generated by viewers without loading the player again. |
| Player Startup Time | Player Loads | `Player Startup Time` measures how long it takes to load the player. This metric is especially important for web deployments of the player. Native deployments will have a `Player Startup Time` below 0.01 seconds as in most native deployments the player already loads with the app. Breakdowns for this metric are sorted by the number of `Player Loads`. <br> Please note that some pages might load two or more players per page, hence the number for `Page Loads` and `Player Loads` can differ |
| Video Startup Time | Video Starts | `Video Startup Time` is the amount of time it takes from starting the playback until the first frame is displayed to the viewer. <br> Breakdowns for `Video Startup Time` are sorted by the number of `Video Starts`. |
| DRM Load Time | DRM Licenses Loaded | `DRM Load Time` measures the time it takes to retrieve the DRM encryption key. <br> Breakdowns for ‘DRM Load Time’ are sorted by the number of `DRM Licenses Loaded`. |
| Seek Time | Seeks | `Seek Time` is the duration it takes from initiating a seek until the playback resumes at the new position. <br> Breakdowns for this metric are sorted by the number of `Seeks` that occured during the time frame selected. |
| Error Percentage | Number of Errors | The `Error Percentage` shows the errors in relation to the number of sessions considered. <br> Breakdowns for `Error Percentage` are sorted by the number of sessions that actually had an error. Additionally we display the number of `Session Considered`, as errors might occur before a video starts. |
| Start Failures | Start Failures | `Start Failures` measure the amount of play attempts that failed due to a technical reason. Possible failure reasons are PLAYER_ERROR or TIMEOUT.<br>We count a session as TIMEOUT when the player does not send a playing event for 60 seconds, so when the viewer didn't see the first frame of a video within 60 seconds. <br> Due to platform limitations `Start Failures` only include TIMEOUT as Start Failure Reason on Roku Native and Bitmovin Roku SDK . |
| Rebuffering Percentage | Rebuffering Percentage | `Rebuffering Percentage` is the average time a user had to wait for video segment downloads in relation to the total time a user spent watching a video. <br> Breakdowns for this metric are sorted by `Rebuffering Percentage`. <br> As an additional metric, we show `Played`, which is the sum of play and buffering time, so you can evaluate how much play and buffering time the selected category saw. |
| Buffering Time | Buffering Time | `Buffering Time` shows the average buffering duration per `Play`. It is an indicator of how much buffering every Play experienced on average.<br> Breakdowns for `Buffering Time` are sorted by `Buffering Time`, so you always see those categories first, which had the highest value for that metric.. |
| Data Downloaded | Data Downloaded | `Data Downloaded` shows the amount of video data downloaded during playback sessions by users<br>The metric cannot be retrieved on AVFoundation and Bitmovin iOS SDK due to platform restrictions. |
| Bandwidth | Bandwidth | `Bandwidth` shows the average download speed your users have experienced during their video sessions.<br>The metric cannot be retrieved on AVFoundation and Bitmovin iOS SDK due to platform restriction. |
| Video Bitrate | Play Duration | `Video Bitrate` shows the average played bitrate across all plays on the platform. <br> Breakdowns for this metric are sorted by the total `Play Duration` on the selected category. |
| Scale Factor | Plays | `Scale Factor` is a numeric indicator of the relationship between the playback window size and the resolution your stream was delivered on. <br> Breakdowns for this metric are sorted by the number of `Sessions Considered`, counting only those sessions where the player was loaded in the foreground. |
| Top Subtitles | w/ Subtitle \[Language\] | `Top Subtitles` show the most used subtitles. <br> When one specific subtitle is selected, breakdowns for this metric are sorted by the number of sessions that were able to track subtitles \(depending on the collector and if subtitles were available in the video\). |
| Top Audio Tracks | w/ Audio Track \[Language\] | `Top Audio Tracks` show the most selected audio tracks. <br> When one specific subtitle is selected, breakdowns for this metric are sorted by the number of sessions that were able to track audio tracks \(depending on collector and if an audio track was available\). |