Stream Configuration Settings

1 Output media format
2 Output bit rate
3 Burst buffer
4 Stream history
5 Overfill limit
6 Metadata delay
7 Delay buffer time

This article explains each setting that can be altered under Stream Configuration in you Revma Station. Stream Configuration can be found in Settings>Advanced.

Altering these settings might be used for multiple reasons, among which to allow a stabler connection for listeners with a weak network or, on the other hand, for a more “real-time” listening experience.

Saving the changes by clicking on “Update settings” will restart the stream and, therefore, cause a momentary disconnection.

Output media format

This category is only available in Loop Channel stations and transcoding relay stations. For more information on the differences between the station types, have a look here: Revma Station Types

In this section a user has the option to toggle the audio media format between AAC and MP3. AAC generally achieves better sound quality than MP3 at similar bit rates. This difference in quality is more obvious at lower bitrates.

Output bit rate

This category is only available in Loop Channel stations. For more information on the differences between the station types, have a look here: Revma Station Types

A user can alter the bit rate in which the stream is encoded. The higher the bit rate, the better the audio quality and, accordingly, the higher the network requirements on the listeners' side. The bit rate is represented in bps and by default it is set to 128000 (128 kbps).

Burst buffer

The amount of seconds the burst buffer is set to, indicates the amount of audio in seconds that is going to be delivered to users upon connection. It also indicates how much audio exists in the client buffer. This Applies only for IceCast type of streams. The minimum it can be set on is 100 milliseconds and the maximum 60 seconds. The default value is 5000 ms.

Stream history

Adjustments made in stream history define the total amount of time that is kept in server buffer and also determines how long a user can be away from the live source. The minimum amount it can be set on is 30 seconds and the maximum 600 seconds. The default value is 90 secs.

Overfill limit

Where the Overfill limit is set to, defines the maximum time that a listener can receive replaced content as Ads or Fill in excess of a spot block duration. For example, if in a spot block of a 90 second duration we only have 2 minutes of content to replace, in that case the overfill value will become 30 seconds. In case there is a limit the streaming service will decide to break the content and return to the normal stream. Overfill limit will not exceed Stream History limit. The minimum amount it can be set on is 0 seconds and the maximum 600 seconds. The default value is 60 secs.

Metadata delay

The metadata delay setting defines how much delay there will be by the time a metadata update request takes place until the time it's actually injected in the stream. Used to sync encoder and gateway in case of network lags. The default value is 500 ms.

Delay buffer time

The amount of server-side buffer (in seconds). Primarily used to prepare content for ad-replacement, but applies even if there are no ad replacement rules set. The default value is 10 secs.