Almost a week has passed and absolutely no one has posted a reply to my thread Anyway, for reference, here is one post/thread where someone is saying that Plex is able to display embedded jpeg inside a dng file:
Here is another dude saying that dng works in Plex, and the fact the he is seeing his edits made in dng files means Plex is able to extract and display jpeg inside dng file:
Anyway, for reference, here is one post/thread where someone is saying that Plex is able to display embedded jpeg inside a dng file: