Installation

Requirements

Unreal Engine 5.3 to latest is required to run the plugin.

All versions of Unreal Engine 5 can be downloaded through the Epic Games Launcher.

Python Editor Script Plugin

Accession relies on the Python Editor Script Plugin to run its internal scripts. This plugin is available for free through the Epic Games Launcher, and can be enabled on a per project basis. However, it is possibly enabled by default on some versions of Unreal Engine, so be sure to check if it is already enabled before enabling it manually.

To enable the Python Editor Script Plugin dependency:

1. Open your Project, and choose Edit > Plugins from the main menu.
2. In the Plugins window, go to the scripting section.
3. Find the Python Editor Script Plugin in the right-hand panel, and check its Enabled box.
4. Then restart the editor.

For further details see Scripting the unreal editor using python. (This plugin must be enabled on a per project basis)

GPU Support

DISCLAIMER: Hardware Acceleration is only available through NVIDIA GPUs

Transcription execution can be performed through the use of CUDA Toolkit.

With the following CUDA Library Requirements:

• cuDNN 8 for CUDA 12

Once cuDNN is installed, you must ensure it has been correctly added to your systems environment variables so Accession can find it. Follow the below instructions for your operating system:

Windows Environment

1. Open your Start Menu and search for "Edit the system environment variables".

Note: If you do not have administrator priviledges, search for "Edit environment variables for your account" instead.

1. In the Systems Properties window, click Environment Variables button.
2. Under the "System Variables" section, find and select the variable named Path, then click Edit.
3. Check the list of path for your cuDNN bin folder. By default, this looks like: C:\Program Files\NVIDIA\CUDNN\<VERSION>\bin.
4. If it is missing, click New and paste the directory path where you installed cuDNN. (Be sure to replace the <VERSION> with your actual installed version number, which you can verify using File Explorer).

Linux Environment

On Linux, you need to update your LD_LIBRARY_PATH so your system knows where the cuDNN libraries are located. This is typically done by editing your shell profile.

1. Open your terminal
2. Open your shell configuration file in a text editor (e.g., nano ~/.bashrc if you use bash, or nano ~/.zshrc if you use Zsh).
3. Scroll to the bottom of the file and add the following lines. (Note: Adjust the /usr/local/cuda path if you installed cuDNN in a custom directory):

export PATH=/usr/local/cuda/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH

1. Save the file and exit the editor (Ctrl+O, Enter, then Ctrl+X in nano).

Plugin Installation

Precompiled Installation (Blueprint and C++ Projects)

Get the latest release of the precompiled plugin compatible with your target unreal version.

Engine Install

You have to extract the downloaded release in your Unreal Engine 5 Plugins/Marketplace folder.
Example: C:\Program Files\Epic Games\UE_5.3\Engine\Plugins\Marketplace

Per Project Install

You have to extract the downloaded plugin release in the Plugins folder of your project.
Example: C:\Path\To\Your\Projects\Root\Plugins

Installing the plugin source (C++ Projects only)

Clone or download the plugin source into your projects Plugins folder.
Install Visual Studio with the "C++ for Video Games Development" modules.
Regenerate the projects solution file (right click on the .uproject and choose Generate Visual Studio project files).
Open the Solution in Visual Studio and build it (F5 by default).

Launching the Plugin

Once installed, upon launching the plugin for the first time, users will be prompted with an in-engine installation. This can take up to 10 minutes depending on network speeds. However, once the process is finished and in-engine dependencies installed the installation is complete.

Relaunching the editor once complete is recommened, to verify installation was successful.