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# Configure source error management

You can configure the encoder behavior in case of source error management. You can :

* Activate the switch on ES data loss to backup the source if video or audio input is lost.

* Configure a slate (replacement image) that will be displayed if the input is not detected at start.

* Activate the fast recovery to recover the signal faster.

## Configure switch on ES data loss

You can activate the **Switch on ES data loss** to backup the source if video or audio input is lost. In case of video or audio input loss of both sources, the option selected with frame freeze management applies (see [Configuring the video prefiltering](/beam/live-encoder/parameters/input/source-error-management)).

Works both in Active/Active and in Active/Passive redundancy mode.

* Display services.

* Click  to edit the service. The General parameters display.

* Select the Input tab to display parameters.

* In the Source error management section, tick the Switch on ES data loss check box.

* Under Delay, specify the time before switching to the backup source when loss of video or audio occurs. See Input - Source error management.

## Configure a slate

You can specify a slate (replacement image) that will be displayed if the input is not detected.

* Display services.

* Click  to edit the service. The General parameters display.

* Select Input tab to display parameters.

* In the Source Error Management section, tick the Slate if no source at start check box.

  The image displayed is the same as the one configured for **Media Processing** > **Video Processing** > **Freeze Frame Management** section.

* Select the Default frame rate for this slate.

## Configure fast recovery

The **Fast recovery** option is activated by dafault.

* When checked, the encoder will process the access units as soon as possible to recover the signal faster, though temporary macroblocks may appear.

* When unchecked, the encoder will wait for the closest random access point (RAP), prioritizing video quality over signal recovery speed.

* Display services.

* Click  to edit the service. The General parameters display.

* Select Input tab to display parameters.

* In the Source Error Management section, tick or untick the Fast recovery check box depending on your needs.