Videos like
- https://{ORGID}.sharepoint.com/personal/{USERID}/_layouts/15/stream.aspx?id={VIDEOID}%2Emp4&ga=1
- https://{ORGID}.sharepoint.com/:v:/p/{USERID}/{VIDEOID}
- Run video from SharePoint corporate account or OneDrive,
- In Chrome open
Web inspectorand inNetworkfilter byvideomanifest - Copy this url
- Run
ffmpeg -i "%URL%" -codec copy outputvideo.mp4

You can also try this extension which I made for downloading transcripts, including grouped by speaker for LLM ingest.
https://github.com/brendangooden/ms-teams-transcript-downloader
https://chromewebstore.google.com/detail/MS%20Teams%20Transcript%20Downloader/hmljlkhcebhkkhbbafiheolbneecoinp
i will be adding video and audio download support soon!
[Edit - added now!]