Office 365 Videos is an intranet website
portal where people in your organization can post and view videos. It's a
streaming video service for your organization that's available with SharePoint
Online in Office 365. It's a great place to share videos of executive
communications or recordings of classes, meetings, presentations, or training
Channel admins for Office 365 Video can create channels to organize videos.
You can have channels for particular subjects, for example, or for specific groups such as departments or teams
You see only the channels that you have permission to view
To upload a video, you upload it to a specific channel.
You can upload multiple videos to a channel at the same time.
Anyone in your organization who has edit permission for a particular channel can upload videos to it
Editing information about a video
Providing information about a video will make it easier for other people to find it through search, and will provide additional context for it in Delve and the Office Graph.
You have to have owner or editor permission for the channel that the video is in
Owner and people metadata
Office 365 Video also shows who uploaded the video and the various people who are in the video.
This enhances the discoverability of the video and highlights the main speakers; it, too, enhances when and how your videos appear in other users’ Delve activity feeds pivoting off of the relevant context of who knows who
Changing a thumbnail for a video
Add subtitles or captions
Subtitles or captions are lines of text that appear at the bottom of a video and provide a transcript of the audio portion of the video
You can add subtitles or captions to any video by uploading one or more subtitle or caption files
Watching a video
You can watch videos from where they are featured on the Office 365 Video home page, and from specific channels.
When you select a video thumbnail, the video plays right in your browser window
Sharing videos with others
Embed an Office 365 video on your site. You can display the video on a SharePoint Online site or other website by adding the embed code for that video to the page where you want the video to appear.
Post to Yammer. You can post to Yammer about a video while you're watching it, and your post will automatically include a link to the video that you're watching.
Send a link to a video in an email. To get a link for a video, select the video in Office 365 Video and then copy the URL from the browser address bar.
Discover spotlighted channels and videos
Find the most popular videos
See what videos are most popular for your entire organization, check the Trending section on the home page.
See what videos are particularly popular in a certain channel, check the Trending section on that channel page.
Find videos that you've uploaded
Search for a video
Restore a video in the Recycle Bin
Deleted videos sit in the Recycle Bin for 90 days, and it is now possible to recover and restore videos from the Recycle Bin.
Admins can restore videos that have been deleted by a user
-Office 365: Everything You Wanted to Know - Jan 2017 -Microsoft