In most cases, modern video content delivery systems are based on HTTP Streaming. This technology delivers video in a series of fragments (chunks), several seconds each. The most popular video delivery formats are Apple HTTP Live Streaming and Adobe HTTP Dynamic Streaming. In the near future, MPEG DASH will also probably become popular. The benefits offered by this type of delivery consist in a more stable video platform operation over a heterogeneous public network (Internet) and use of existing mechanisms of traditional CDN networks (HTTP chunk caching). But often traditional media is not sufficient, and large-scale online video services usually require a more flexible management of video content delivery. In our projects, we use our Video Load Balancer. In this post, we are going to outline the basics of its operation that might be helpful to your projects regardless of the load balancing technology you use.