Hi,
Thank you for your response!
If you can view the video yourself on the web, it means your files have been successfully uploaded to the OneDrive cloud.
This proves that the problem is on the server side and not an error in settings etc.
Meanwhile, I've done some deeper searching and found that other users have recently reported the same problem as you with shared files not being opened by others, which further proves that the problem is on the server side.
I would very much like to help you directly with this issue, however, if the error is occurring on the server side and not on the client side, then only the development team can resolve the issue. We will be on the same side as our users waiting for this issue to be resolved.
You can send us your feedback by providing feedback at the following link: OneDrive · Community (microsoft.com)
You can also open the OneDrive mobile app, shake it, and click the report to send it. You can provide a detailed explanation to the OneDrive engineering team by taking a screenshot of the issue you're experiencing (or you can also send feedback about the issue via a OneDrive link (live.com). (Available in English only.)

Thus, you can bring together the various manifestations of the problem you are experiencing in order to fully understand the full picture of the problem and provide a more complete solution.
▲ I'll keep track of the issue in this reply thread and share the latest progress on the issue as soon as possible.
Thank you for your understanding🙂
Best Regards,
Mila.L-MSFT| Microsoft Community Support Specialist