1. In Stream, find the video you want to edit (for example, through My videos, My channels, My groups or Browse) and click the group.

  2. On the More menu More menu icon, click Edit.

    Edit video button

  3. Start editing the metadata, permisions, and settings.

    Edit video page

For detailed information on each field and setting for the video, see the Edit metadata section in Upload a video.


Source: Microsoft