Otherwise,you can easily embed any public youtube video in your blog.Go to youtube.com and search for the video.For example,if you want to embed a britney spears video,search it and copy the embed code on to a windows notepad or anything else.
The following process is explained below with pictures for easy understanding. this How to Embed Youtube Videos in your blog
1.Go to youtube.com and search for your required video
3.Publish the post.That's it, as you can see now,the youtube video is embeded in your post properly.
NOTE:You can change the width and height of the video by replacing the values to your desirable ones.
If you have any doubts regarding to this post,feel free to ask it here via your comments. How to Embed Youtube Videos in your blog