I think right now the work around is uploading a video to youtube and then embedding the video in a post. It's a bit of extra work, but I mean from a web development perspective it's a heck of a lot easier for the folks at Cubebrush to do than having embedded video uploading, hosting, and playback.
Worst case scenario, you're giving someone a link to a youtube video that still works, even if not embedded. I'm on my phone right now, so let's see what I can do...
Yep. Literally copied and pasted a youtube link, and the above is what appeared.