How does Phenix multi-bitrate transcoding work for adaptive bitrate (ABR) delivery? What do I need to include in my code to enable it?
Phenix provides customers with Adaptive Bitrate (ABR) capabilities for optimal stream quality given each individual viewer's network conditions.
To enable transcoding for real-time multi-bitrate and multi-resolution
delivery, you simply pass the
capability on the publisher. You also pass through the desired quality capability.
When adjusting bitrate based on Internet connection, we use lower
resolutions for lower renditions. Our default MBR policy uses resolution
bitrate pairs that are very similar to YouTube. Phenix will
automatically transcode to the applicable quality layers below the
selected quality level. For example, if you select
hd as your top
layer, then you get
vld , and
There are no requirements on the viewer side to enable ABR streaming. As
multi-bitrate is set on the publisher, the viewers will
automatically connect to the highest quality layer that is sustainable
for the network connection. The viewers will also switch between quality
layers as needed throughout the duration of their streams.