How to Enable Adaptive Bitrate (ABR) in Castr

Castr supports adaptive bitrate streaming for our HTML5 players. Here's how to enable it in the Video Settings Page:

  1. Go to a Livestream project
  2. Click on Video Settings 
  3. Toggle Enable Multi-Bitrate Transcoding button

The stream is now transcoded and delivered in multiple bitrates from Castr. 

Note: It's highly recommended to set the incoming bitrate of the stream to 4000 kbps to 5000 kbps for better performance.

How to Get Custom Live Transcoding Settings

The settings for Adaptive Bitrate Streaming in Castr is predefined.

Therefore, a custom transcoding settings for your stream on Castr can only be done in our backend. Please contact us through our 24/7 support, and we are happy to go through it for you!

What is Adaptive Bitrate Streaming?

Adaptive bitrate (ABR) is a video streaming technique that detects a user’s bandwidth and device capacity and adjusts the quality of the stream in real time.

In ABR, videos are stored in a server and are compressed in a number of different rates: from 50, 100, 150 to 2,500, 3,000, and 4,000 Kbps. Rather having one fixated bitrate for a stream, ABR uses a transcoder to encode one single video source to multiple versions of different bitrates.

If your internet bandwidth doesn’t allow for streaming the 4000 Kbps version, you can still view the same video at a lower bitrate, for example, 2,500 Kbps.

To learn more about adaptive bitrate streaming, please read the rest in our blog.

If you need any help with ABR, please contact us, and we will help you out.

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