All cover videos are public, which means anyone visiting your Page can see it.
Add or Change Your Page's Cover Video
To add or change your Page's cover video:
Go to your Page.
Click Add a Cover in the top left of your cover photo or video.
Select Upload Photo/Video to upload a video from your computer, or select Choose From Videos to use a video you've already uploaded to your Page. Keep in mind your cover video should be at least 820 x 312 pixels and between 20 and 90 seconds. For best results, choose a video that's 820 x 456.
Select the video from either your computer or your existing videos.
After the video has uploaded, reposition the video by clicking it and dragging it up or down, then click Next.
Click the arrows to scroll through up to 10 thumbnail options for your cover video. The thumbnail image may be used when someone hovers over your Page's name to get more context about your Page.
Cover Video Guidelines
Keep the following in mind when choosing a cover video:
Make sure that your cover video follows the Pages Terms. Cover videos can't be deceptive, misleading or infringe on anyone's copyright.
Your Page's cover video should be at least 820 x 312 pixels. For best results, upload a cover video that's 820 x 456.
Your Page's cover video should be between 20 and 90 seconds.
If you later decide to remove your cover video, the video won't be automatically deleted and will still be available in your Page's video library.