I just set up a gallery with an M4V video in it. I added class_video plugin, and the video play just fine. However, it has a default m4v thumbnail. Is there a way to change to a custom thumbnail?
Should the gallery be extracting the existing thumbnail (I have having an issue with refreshing metadata
Just to mention it is explained here as well:
https://www.zenphoto.org/news/problems-with-albums-and-images/#------thumbnails-for-videos-or-other-non-standard-