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# Configure the Live Encoder service

The following sections explain the basic configuration for the Live Encoder component. For advanced configuration, see the following sections of Live Encoder:

* Input parameters

* Encoding parameters

* Output parameters

To configure the Live Encoder, follow these steps:

* Click  next to the Live Encoder component within the feed. The Live Encoder settings open.

* When you get to the General tab, the name is already pre-defined. It will be incremented at each new feed instance so you don’t need to change it.

## Configure the input

To configure the video, audio and data components, follow these steps:

* Go to the Input tab.

* In the General parameters section, select the input type:

SDI

* or SMPTE ST 2110

### SDI input

Before you start: ensure you already [set up the SDI card for HD or UHD operation](/beam/system-admin/maintenance/setup-sdi-asi-card).

To configure an SDI input, follow these steps:

* From the General parameters section:

Set the input Type to SDI.

* Select a Connector from the drop-down list.

* You can keep the SDI card number, by default 1 or change it.

* Go to the Input streams selection section: the input video is already configured but you can add an input audio:

Go to the Audio ID section.

* Click Add. You can either keep the default parameters or modify them as needed.

* Click Ok to validate.

* Click Save and continue to save your changes.

### SMPTE ST 2110 input

Before you start: ensure you already [set up the SMPTE ST 2110 input operation](/beam/contribution/how-to/setup-smpte-2110-input).

To configure an SMPTE ST 2110 input, follow these steps:

* In the Input > General parameters section, set the input Type to SMPTE ST 2110.

* Configure the input video stream:

In the Input streams selection section, go to the Video ID section.

* Click  then enter the SDP file location.

* Click Ok to validate.

* Add and configure the input audio stream:

In the Input streams selection section, go to the Audio ID section.

* Click Add then enter the SDP file location.

* Click Ok to validate.

* Click Save and continue to save your changes.

**See also**
[Limitations and Considerations for ST2110 and PTP](/beam/contribution/how-to/setup-smpte-2110-input#limitations-and-considerations-for-st2110-and-ptp)
[Configure SDP files on MK.IO Beam](/beam/contribution/how-to/setup-smpte-2110-input#configure-sdp-files-on-mkio-beam)
[Setup the PTP for ST 2110](/beam/contribution/how-to/setup-smpte-2110-input#configure-ptp-for-st-2110)

## Configure video, audio and data components

### Configure the video component

To configure the video component go to the **Video encoding** section.

* Click  to check and configure the video parameters.

* Select the appropriate parameters for the video encoding.

* Click Ok to validate.

### Configure the audio component

To configure the audio component go to the **Audio encoding** section.

* Click Add. A new window is displayed. By default audio codec is set to Pass-through but you can change it.

* Select the appropriate parameters for the audio encoding.

* Click Ok to validate.

### Save

Click **Save and continue** to save your changes.

## Configure the output

* Go to the Output tab. A default output has already been created.

* In the top right corner, click .

* Scroll to the Common MPEG-2 TS parameters section. You may change some parameters, especially Standard, PCR PID, Program number, Service name, Service provider.

* Scroll to the Output streams section, click  then tick the audio stream.

* You can change the PIDs if needed.

* Click Ok to validate.

* Click Save and continue to save your changes.

## Configure advanced parameters

### CBR

To ensure that the video is output as a CBR elementary stream, you need to add an advanced parameter:

* Go to the Advanced parameters tab.

* Click Add then set Mpeg2ts.NullPacketStuffing to False.

* Click Save and exit to save and finalize your service configuration.

* Select the Home menu from the left menu bar to go back to the Home page.

### SCTE-35 pass-through

If passing through SCTE35 messages with a default configuration, a high proportion of null splice messages will be output in comparison to splice messages which contain actual splices. This can be adjusted using the **capDmif.maxScte35Bitrate** advanced parameter. Setting this to a value of **7520** will reduce the number of null splice messages in the output.