When you are on youtube, you will see several options by the embed code. One of them is the "use old embed code" option. Click that and it will generate a different code. That is the one I always use to add videos
Edit: hope you guys found that usedful. I tried responding way earlier, but I am at work and my cell phone has been really, really bad today. I see Grappler0000 pointed you in the right direction.
You the man Grappler! Hell, I think you taught me how to upload videos too!