When you see the error message, please click the Manage button. You will be redirected to the Projects page, where all your video projects are listed.
Find the videos that have already been shared. You’ll see “Shared” displayed in the bottom-right corner of their thumbnails.
You can delete the share links for any videos you no longer need. Once the share links are removed, video hosting space will be freed up, and you’ll be able to generate new share links for other videos.
Alternatively, if you no longer need those video projects at all, you may directly delete the shared video projects to free up space as well.