Currently it's not possible to password protect a YouTube. However, you can make it private and then give certain people access to it. Another solution is simply to use Vimeo which does have password protection.
Vimeo respects your videos and your right to decide who watches them. Privacy options allow you to upload videos and choose who can see them. Private videos will not show up in search results on Vimeo or in other search engine results.
To access the privacy settings of your video, click Settings under your video on the video page, then click the Privacy tab.
https://vimeo.com/255342110
password: niceworld
You can select from the following privacy options to determine who can see your video:
- Anyone - Allow anyone to see this video.
- Only me - Make this video visible to me and no one else
- Only people I follow - Make my videos visible only to people I follow on Vimeo (Note: this setting will make it so that people you follow will see your video in their feeds)
- Only people I choose - I'll select people with whom I want to share this video (Note: this setting will only work for sharing with other Vimeo members)
- Only people with a password Protect this video with a password (Note: you can share password protected videos with non-Vimeo members)
- Only people with the private link (Plus + PRO + Business only) - Make video visible only to people who have the link. (Your video cannot appear in channels or groups, and any credits you’ve added will be removed.)
- Hide this video from vimeo.com (Plus + PRO + Business only) - This video can be embedded on other sites but can’t be viewed on vimeo.com. (Your video cannot appear in Channels and Groups but can still be added to Albums and Portfolios.