YouTube has an awesome feature called “blur all faces” that allows you to blur faces in your own uploaded videos.This feature is a huge help in protecting identities of your own, your friends and families.Suppose you are interested in posting videos about public events or public lectures but you don’t want to reveal your identity then you can use the YouTube blur face feature to promote visual anonymity.
Here are the steps on how it works
1.Just go to Video Manager directly by clicking the arrow next to upload at the top of the page.
2.Select the video that you want to Edit.From the edit menu that appears select the option Enhancements.
3.To blur face click on Special effects that is present on the right side of your screen and then click the Apply button.
4.To save the videos click on the Save As button.A pop-up will appear in which you can select either to keep the copy of the original video or to delete your original video.
5.Once you have finished saving just wait until the video get processed.Now again go back to video manager to see the blur faces in videos.