A new tweak to the sharing link dialog used by OneDrive for Business, SharePoint Online, and other Microsoft 365 workloads block downloads of video and audio files by default. This is probably what you want to happen as, unlike Office documents, when you share a video or audio file, it’s likely to be final content ready to be consumed rather than being worked on.
https://office365itpros.com/2021/12/10/sharing-links-video-audio-files-block-downloads/
