- Upload your video to YouTube as Unlisted (you can select public if you don't mind the general public seeing the video; however Private videos do not work in Op Central)
- Ensure the "Allow Embedding" box is ticked (no others need to be - see reference image below).
If you need further guidance on privacy settings in YouTube, click here.
- Open the uploaded video and copy the full URL from the address bar (not the embed code).
- Paste the link you've copied into the Reference URL field in Op Central. The video will appear with a playable thumbnail preview below.
If you do not see the playable preview, then you have copy/pasted an incorrect link.
If you see a link that looks like this: https://youtu.be/______ it is an incorrect link.