Electra Protron Player in Unreal Engine | Unreal Engine 5.7 Documentation

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Electra Protron is a version of the Electra player optimized for local filesystems and container based media. It is meant to help you achieve smooth in-editor scrubbing, looping, and seeking performance, not only in-editor but also for live video performance. For best scrubbing performance, use the Apple Pro Res codec.

Enabling Electra Protron in the Editor

In the Project Settings, you can find a new section called Electra Protron Factory. This provides a way for you to override the default player to pick Protron as preferred player over Electra for the following cases:

In-Editor: Protron only gets picked while in editor.
In-Game: Protron also gets picked while in Standalone or Packaged modes.

Electra Protron Factory in the Project Settings

Enabling Protron Player in File Media Source Assets

The Protron player is part of the Electra plugin so there are no other prerequisites for enabling it. By default, UE uses the Electra player instead of the Protron player. If you do not want to use the Project Settings override, you can still use the Protron player directly with any File Media Source asset you want. Proceed as follows:

Open the asset in the editor.
In the Details panel under Platforms, open the menu for Windows, then select Electra Protron.

Any further playback request for the asset, for example from the Media Plate actor, the Media Track in Sequencer, or the Media Viewer, now uses Protron Player.

Electra Protron in the Details panel of a File Media Source asset

Verifying Protron

To ensure UE uses Protron when appropriate, you can verify the player in-use in various areas where the engine plays media assets.

File Media Source

You can verify Protron is used when playing a File Media Source asset. When you open and play the media asset, you can see the current active Player name displayed under Media Details during playback.