# Specify Modules to Enable

You can choose the modules to enable when Media Server starts. To use less memory and increase the speed at which Media Server starts, enable only the modules that you want to use.

Any module not listed below is always enabled and cannot be disabled.

To use any of the following modules you must specify the modules to enable when Media Server starts.

- `AudioCategorize`
- `AudioMatch`
- `Barcode`
- `Demographics` - face demographics.
- `FaceDetect` - face detection.
- `FaceRecognize` - face recognition.
- `FaceState` - provides information about facial expression, whether the person's eyes are open, and whether the person is wearing spectacles.
- `ImageClassification`
- `ImageComparison`
- `ImageHash`
- `NumberPlate` - number plate recognition.
- `ObjectClassRecognition`
- `ObjectRecognition`
- `OCR`
- `SpeakerID`
- `SpeechToText`
- `VehicleModel` - vehicle model recognition.

To specify the modules to enable

1. Open the Media Server configuration file in a text editor.
2. Find the `[Modules]` configuration section. If the section does not exist, add it by typing `[Modules]` on a new line.

3. Use the `Enable` parameter to specify a comma-separated list of modules to enable. For example:

       [Modules]
       Enable=barcode,ocr

4. Save and close the configuration file.

   When you restart Media Server, only the specified modules are enabled.

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