If you wish to re-used videos from LumiNUS in Videos (Panopto) you need to migrate the videos to Panopto first.
Below is are the steps.
Step 1:
Go to LumiNUS → Module Code → Multimedia section → Select the Multimedia you wish to migrate to Panopto.
Note: If the Multimedia is already in MediaWeb, it will not be migrated over even if it is selected.
Note: Only videos and audios hosted on LumiNUS Multimedia will be migrated to Panopto, web links and images are excluded.
...