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# Write Video to an Evidential Rolling Buffer

To write ingested video to an evidential rolling buffer, follow these steps.

To write video to an evidential rolling buffer

1. Create a new configuration to send to Media Server with the `process` action, or open an existing configuration that you want to modify.

2. In the `[Session]` section, add a new task by setting the `EngineN` parameter. You can give the task any name, for example:

       [Session]
       Engine0=Ingest
       Engine1=EvidentialRollingBuffer

3. Create a new configuration section to contain the task settings, and set the following parameters:

   `Type` | The type of engine to use. Set this parameter to `EvidentialRollingBuffer`.
   `Stream` | The name of the rolling buffer to write video to. You must have created the rolling buffer (see Set Up Rolling Buffers).

   For example:

       [EvidentialRollingBuffer]
       Type=EvidentialRollingBuffer
       Stream=Camera3

4. Save and close the configuration file. Micro Focus recommends that you save your configuration files in the location specified by the `ConfigDirectory` parameter.

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