I only tested it with VLC sources, on linux, it works, outputs title, progress and duration of the video.
I would like to see more entries available in the output, I used the {json_formatted} on videos and there are not entries for the path or the filename, I had to fill the title entry of all videos with the filename, I made a script for it, but still. I would like to see different settings for each scene collection or profile, for multistreaming purposes.