Video Watermarks

You can add watermarks to your videos, but they must not be huge or intrusive. Your watermark should be in the bottom right or left corner of your video, and should not span more than about 30% of the video's width. Remember, directly under your video there will be a promo advertising your site with a logo, a description and a link, so the user will already know where the content is from, lessening the necessity of a watermark. 

Below is an example of a good watermark, and a bad watermark.