First grab the address from the embed.
Copy it
Then click the red f in the icon bar here
That stands for flash
Generally ALL you tubes are 425 by 344.So far haven't found any different.
Paste the link in and then make the size in the boxes 425 by 344 respectively.
Bing,you're done.Click Send.
If it doesn't work let me know.
Should. We can fix it and rewrite the 'how to' for ya.