Add custom aex format plugin to Media Encoder

I have an output format plugin for After Effects to render out image sequences in a file format called VBN, which is the native image format for the Vizrt broadcast graphics system. The plugin works really well in AE and I would like to add this plugin to Media Encoder so I can do file conversions from there. To install in AE it's as simple as copying the .aex file to C:\Program Files\Adobe\Adobe After Effects CC nnnn\Support Files\Plug-ins\Format and VBN appears in the list of available file formats. I tried to do the same by copying the plugin to C:\Program Files\Adobe\Adobe Media Encoder CC nnnn\Plug-Ins\(AfterEffectsLib)\Format but the VBN doesn't appear in the list in ME. 

Is it possible to add custom AE output plugins in ME, and if so how do I do it?