Engagement is the umbrella for how much and how meaningfully viewers use a service: how often they return, how long they watch, how many titles they explore, and how deeply. It is the behavioral layer between acquiring a user and keeping them, and it is the strongest leading indicator of retention.
Services track engagement through metrics like watch time, sessions per week, titles per user, and completion, often segmented into cohorts and engagement tiers (a viewer watching most days behaves very differently from a monthly drop-in). Because engaged viewers churn far less, almost every product investment - recommendations, content, QoE, notifications - is ultimately judged by its effect on engagement.


The handbook · 7 volumes
Fora Soft Video Engineering Handbook
Engagement is the leading signal of retention, and playback quality is one of the factors that moves it. We wrote seven volumes covering the video stack; for engagement start with Volume 3 on QoE monitoring, players, and stall recovery, then Volume 1 on picture quality, with delivery latency in Volume 2. Written by Nikolay Sapunov, CEO at Fora Soft.
Viewers sign up but engagement drops after the first weeks?
We will review your playback data and analytics and send a plan linking QoE fixes and features to engagement metrics. 250+ video products shipped since 2005.