Uploaded video thumbnails/previews on android app?

I’m using the latest versions (3.5.3 server) as well as mobile. Currently when I upload a video, it displays a black box. I’ve read of some plans of improving this, but these were from years ago.

How can I make video previews actually work on the mobile app? Will there be plans for this in the roadmap? Thanks.

Still not a thing? This would be a really nice feature. All I see is a black box with a play button.

It may be a subreddit setting. Check your preferences on the desktop site. You can choose to always view thumbnails, which should carry over to the Kodi nox app.