For questions about James' Media Plugin please post in its GitHub repo at https://github.com/jamesmontemagno/MediaPlugin .
Per his note in Nov 2020:
I will officially be archiving this library in December 2020 unless anyone from the community wants to adopt the project.
If there are specific features that would be useful additions to MAUI's MediaPicker or the upcoming Maui Community Toolkit MediaElement please file a feature request (or comment on existing ones) in the https://github.com/dotnet/maui or https://github.com/CommunityToolkit/Maui repos.