It is possible to enumerate the advantages of uploading videos on his server if you have a blog. Most of the time if you embed Youtube videos they could be lost anytime that it is the inconvenient of linking a blog to a Youtube channel from personal trial. Also, the host of images on an image provider, most of them auto delete images after a period of time or even sometimes image isn't loaded correctly. About monetization placing manual ads on your blog to replace Youtube monetization and cover the hosting fee will be also a good trick. By the way it is costly in terms of database but if you are providing courses with videos you could activate full courses for a little subscription fee. This is what I have recognized as conclusion from blogging with embedded videos or images.