Webm tagging (artwork)

Hello,

Is it possible to add webm video files artwork/cover art support.

Best regards,
Rein

See the change log:
[2020-03-13] NEW: added support for WebM Container *.webm files.

Sorry, but I don't understand. I want to add artwork from my computer but It just doesn't let me to add cover art at all. I have the latest version.

Editing cover art is currently not possible (as with Matroska).