You can choose to have it post in the Gods On Chain community from the 3speak dashboard. If that is not what you are looking for you can create a youtube account. Post your videos there and then just copy paste the youtube link into the first line of your blog followed by a period. This will make the video display at the top of the blog. And if they want to watch it they can click to watch. Like I post on 3speak but i chose the Splinterlands community from the drop down. If that is what my video is related to.