Check the file size and format against your connected provider's limits — very large files on a slow connection can also simply time out mid-upload. Try a smaller test file first to isolate whether it's a size/format issue or a connection issue.

Video providers transcode uploads into multiple quality levels before they're playable, which can take several minutes for longer videos. If it's been stuck for over 30–60 minutes with no progress, check your provider's own dashboard directly — the processing job may have failed there even though the upload to Koursely succeeded.

Confirm the lesson (and the module it's in) is actually published and not still in draft status, and that the student's enrollment or drip-schedule unlock date has actually been reached — a locked or draft lesson can look identical to a broken one from the outside.

This usually points to the source file itself (a muted export, or a bitrate too high for typical mobile connections) rather than a platform issue — re-export the source file at a standard web-friendly bitrate and re-upload.

Confirm you've actually connected a video provider under Settings → Integrations → Video Hosting — this is a required one-time setup step before any video can be uploaded. See Video Hosting Setup.