This page covers the Time to start metric. Adobe Analytics auto-populates a paired Time to start (dimension) from the same a.media.qoe.timeToStart context data variable. Customer Journey Analytics exposes a single mediaReporting.qoeDataDetails.timeToStart field that you can use as either a dimension or a metric. See Time to start for how to collect this variable.
The Time to start metric reports startup time across sessions, suitable for sums, averages, and percentile rollups. Use the metric to compute average startup time across a report period and to compare startup performance across content, networks, or players. Adobe stores the value in seconds and converts at ingest from the milliseconds the player reports.
How this metric is calculated
The player sets timeToStart on the QoE object before session start fires. The backend reports the value on the close call.
a.media.qoe.timeToStart when Media Quality is enabled.c_contextdata.a.media.qoe.timeToStart