Adaptive Bitrate, or ABR, is important in use cases where video quality matters. ABR is a mechanism that enables the client (video player) to upgrade or downgrade to a different bitrate/quality (rendition) based on the performance of the player. For example, if a viewer struggles playing back a stream at 3Mbit/s, the Vindral player automatically downgrades that viewer to a lower bitrate. Competitors: In most HLS setups, ABR is enabled by default. In VOD-scenarios, ABR is not that big of a challenge as ABR only means that the VOD-files should be available at different bitrates. However, in live streaming, ABR is much more challenging as the transcoding into different bitrates has to happen realtime. As a built-in core feature of Vindral, around 99% of our customers run ABR for their streams.