---
title: Media agent for Roku v4.1.0
source: https://docs.newrelic.com/docs/release-notes/streaming-others-release-notes/streaming-others-agent-26-04-09
---

## New features

-   Added QoE analytics for comprehensive video quality tracking with advanced performance metrics
-   Added `averageBitrate` attribute: time-weighted average bitrate across playback
-   Added `peakBitrate` attribute: highest bitrate achieved during playback
-   Added `startupTime` attribute: time from content request to first frame (excludes pre-roll ads)
-   Added `rebufferingRatio` attribute: percentage of playback time spent rebuffering
-   Added `totalRebufferingTime` attribute: total milliseconds in buffer states
-   Added `totalPlaytime` attribute: total content playback time in milliseconds
-   Added `hadStartupError` attribute: boolean indicating if startup failed before content start
-   Added `hadPlaybackError` attribute: boolean indicating if playback errors occurred during session
-   Added `nrActivateQoeTracking(nr)` to enable QoE tracking (disabled by default)
-   Added `nrSetQoeAggregateIntervalMultiplier(nr, multiplier)` to configure event frequency

## Update

-   Synchronized QoE events with harvest cycles
-   Prevented redundant events through intelligent duplication
-   Implemented per-session metric isolation and cleanup
-   Implemented time-weighted bitrate calculations for accuracy
-   Implemented smart startup time calculation excluding ad time
-   Disabled QoE tracking by default; harvest multiplier set to 1 (every harvest cycle)