Note: This has only been tested with YouTube and Vimeo.
This is now pretty simple.
Step 1: Find the video you want to share.
Step 2: Copy the video URL
Step 3: Paste into the body of your forum post.
This is how it will display (in this example):
** OLD WAY **
Step 1: Find the YouTube video you want to embed. Click "Share" and copy the URL that appears below the video. You may have to scroll down slightly.
Now go back to the forum post.
Step 2: Click on the "Special BBCode" button and select "Media" from the drop down menu.
Step 3: Paste the video URL into the "Media URL" field and click "OK".
You'll now see some weird code in your post but that's ok. Once you publish, it should appear just fine and you can even select "Preview Post" to make sure it all worked.
Edited by mikejulietpapa, 03 January 2014 - 04:22 PM.
Updated with much easier way.