Progress markers

The Progress markers are five separate metrics that count sessions whose playhead crossed each of five fixed thresholds (10%, 25%, 50%, 75%, and 95% of the content length). Use them to chart drop-off across the content runtime; pair with Content starts to compute the share of started sessions that reached each milestone.

Each marker fires once per session and is not retriggered on seek-back. Skipped markers when seeking forward are not counted (for example, a viewer who jumps from 5% to 60% triggers the 10%, 25%, and 50% markers all at once).

How each marker is calculated

The media backend evaluates the reported playhead against Content length after each event. When the playhead first crosses a threshold, the corresponding flag is set for the rest of the session. All five markers are reported on the close call. Sessions that never produce a play event on main content (such as Drops before start) never advance the playhead past any threshold, so no markers are set.

10% progress marker progress-10

Fires when the playhead first reaches 10% of Content length.

25% progress marker progress-25

Fires when the playhead first reaches 25% of Content length.

50% progress marker progress-50

Fires when the playhead first reaches 50% of Content length.

75% progress marker progress-75

Fires when the playhead first reaches 75% of Content length.

95% progress marker progress-95

Fires when the playhead first reaches 95% of Content length.