Right now there aren’t any. The dev said a new web UI is coming soon that’ll have them. Until then, I’d recommend trying out Tesseract, it’s a nice Lemmy web UI that supports embedding loops as regular video files with the browser controls you’d expect. Otherwise, you can play the video, right click on it, open in new tab, and then get browser-native controls as a regular video file. It’s hacky, but it works.