Concurrent viewers is the live count of how many streams are active at a given instant - the real-time expression of concurrency. It is the headline number during live events, where a peak of concurrents is both a success metric and the load the infrastructure must survive.
Operationally it is watched on real-time dashboards alongside QoE: a spike in concurrents during a premiere stresses CDN, origin, and license servers all at once, and correlating concurrents with rebuffering or start failures reveals whether the platform is scaling cleanly. It is closely related to the concurrency capacity-planning metric, but framed as a live, observed audience figure.
The handbook · 7 volumes
Fora Soft Video Engineering Handbook
Concurrent viewers is the live pulse of an event, and the number your infrastructure, licensing, and ad sales all depend on. Our seven-volume handbook covers the full video stack; for counting and serving concurrent viewers start with Volume 3 on QoE monitoring, CDNs, and delivery economics, then Volume 2 on live ingest and Volume 1 on encoding. Written by Nikolay Sapunov, CEO at Fora Soft.
Need accurate concurrent viewers counts and a stack that holds at peak?
We will review your analytics and delivery setup and send a plan for reliable counts and peak capacity. 250+ video products shipped since 2005.
