It's crazy what I have to do to post a video here. If anyone else has trouble posting videos try this.

Click new editor, paste embedded video, click allow when little box appears(clipboard). Click post. Click view post. Now you'll have a comment and a link that you can't click onto. Click edit, switch back to standard version. Message box will be black. just click on the box(anywhere) and don't do anything else. Now hit post and when you go back to your comment your video will be up. Don't know how the hell I figured that out or if there's an easier way but that's how I have to do it. It sucks!