The newest version of WordPress is 4.1 and it keeps getting better and more convenient to upload and embed videos on your website.  Just a note of caution, however!

Be sure your .mpg/.mp4 video files have an audio track or it is likely your video will not be recognized or play in WordPress.

I’m not complaining, just hoping I will save others who may produce videos the trouble of having to rerender their video files with an audio track when they don’t have one.  This isn’t a deal breaker, but it’s also not efficient.  After all, if you have a video, say an animation that is without sound, you shouldn’t have to output an empty audio track, it’s just a little more work and makes the files just a little bigger.  Not a big deal in the whole scheme of things, but then again, in the aggregate, is still is wasteful and a bit annoying.

– Aaron Belchamber