Media Server 25.4
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# FinetuneFaceDatabase

Performs a final, optional, stage in the training process that optimizes the neural network to improve recognition accuracy.

This action acts on a single face database, which must meet several requirements:

- The database must have been created with fine-tuning enabled (see the `finetuning` parameter in the action CreateFaceDatabase).
- The database must contain a reasonable number of faces. OpenText recommends more than 50.
- The database must contain multiple training images for most or all of the faces.

NOTE: OpenText recommends that you fine-tune the neural network only if your training data is similar to the media that you will ingest. For example, if you are planning to ingest video captured from a CCTV camera, the training data should ideally have been captured from CCTV. In some cases, using `action=FinetuneFaceDatabase` can result in overfitting and reduce recognition accuracy. If you find that accuracy is reduced, you can revert to the default neural network by setting `DisableFineTuning=TRUE` in your face recognition task.

OpenText recommends running the action BuildAllFaces before running `FinetuneFaceDatabase`, because untrained images are not used to optimize the neural network.

NOTE: The optimized network is used automatically, but you must set the Database parameter when you configure the face recognition task in your session configuration. Otherwise, Media Server uses a generic face recognition network that is suitable for all databases, rather than the optimized network produced by this action.

Running this action does not require a GPU.

Type: asynchronous

Parameter | Description | Required
--- | --- | ---
`database` | The name of a database to process. | Yes
`gpudeviceid` | The device ID of the GPU to use, if you have enabled GPU acceleration and want to override the value of the GPUDeviceID configuration parameter. You can also set this parameter to `CPU`, to disable GPU acceleration for this action and use the CPU instead. | No

## Example

    /action=FinetuneFaceDatabase&database=politicians

## Response

This action is asynchronous, so Media Server always returns success accompanied by a token. You can use this token with the QueueInfo action to retrieve the status of your request.

The `FinetuneFaceDatabase` action can take a significant amount of time to complete (over an hour with a large database). It writes progress information to the application log.

Copyright 2025 Open Text
Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Media Server 25.4

Topic Title: FinetuneFaceDatabase