A simple cross-platform desktop GUI app to easily add cover art/thumbnail to MP4 and MKV files.
This app is developed as an Avalonia UI app and uses Taglib# for metadata tag editing, so it should run and work on Windows, Linux, and Mac as well using .NET runtime.
In order to show video thumbnails/cover pictures in Ubuntu's file manager "Nautilus/GNOME Files", you need to "sudo apt install ffmpegthumbnailer" and configure it to read metadata picture. The config file is loacaed "/usr/share/thumbnailers/ffmpegthumbnailer.thumbnailer" and add -m option to the exec options like this: "Exec=ffmpegthumbnailer -i %i -o %o -s %s -f -m". In windows, MP4's picture is shown normaly but MKV is not supported.
The project file is targeting Avalonia version="12.1.0" with Visual Studio's Avalonia add-on.
TODO
