While I understand that for what you have used your blog for thus far, there would be no need of a video on your blog. You may, however, decide to make trailers for your games (or advertisements, if you haven't already) and show it on your blog. You may decide that, as a teaser, you could show short videos of future game mechanics, without spoiling the plot.
My point is that you may one day decide to use other mediums of displaying things on your blog, and that if you create compatibility for such things as videos now, you may thank yourself later when you suddenly find the desire to create a video for some reason.
As a side note, writing this comment makes me wonder whether you created the ability to add sound files. While both of these have their own respective sections, id est, youtube and the music section, perhaps high priority amazingly important things (such as sounds and videos) could appear on the blog?