Adding a video is quite easy, but there is two key things things to know about doing it to make it work.

First, you must have your video uploaded to youtube, and you must use the add video button. This button will put the proper BBcode tags around the video so it will display on the post.

Here is the button:

Tutorial:  Add a video to your post!-insert-video-jpg

Second, you need to add the URL address, not the share link that youtube provides.

So copy the URL address from your internet browser, and paste it in the box on the forum.

Tutorial:  Add a video to your post!-insert-video-2-jpgTutorial:  Add a video to your post!-insert-video-3-jpg

You can also add Vines in a similar way, check out the vine tutorial