When you add a modern page to a site, you add and customize web parts, which are the building blocks of your page. This article focuses on the Microsoft Stream (classic) web part. The Stream (classic) web part will display a Stream (classic) video or channel on your published page.
If instead you upload video files to SharePoint Online sites, OneDrive for Business, Microsoft Teams, or Yammer communities there are many other existing web parts you can use to feature your videos on a page, see this topic for more information: Using videos on SharePoint pages
Note: This web part is not supported in U.S. Government GCC High and DoD or Office 365 operated by 21Vianet.
Microsoft Stream (classic) is transitioning to a new version of Stream built on the M365 files experience. Both services will co-exist during the transition period. For more information about the new version of Stream: https://aka.ms/NewStream
Add a Stream (classic) video
If you're not in edit mode already, click Edit at the top right of the page.
Hover your mouse above or below an existing web part or under the title region, click , and then select the Stream web part.
Click Add video or channel.
In the toolbox on the right, select your source (a single video or channel), paste the video or channel address.
Optionally, you can set a starting point for a video or, for a channel, you can choose to sort videos by Published date, Trending, Likes or Views.
When you're ready, save and publish your page so that others can view it.