When you add the youtube video to your page you have the option to select the video size, you can pick - small, medium, large or enter a custom size. Try using a smaller size and or entering in the size you would like.
Hope this helps,
Jun 29, 2012 - 9:13AM
Re: Resizing box
I just changed the theme that help me size the box. I use the small option with the all the utube videos. Under one theme the box (pasting into) was from left to right of the screen. The youtube video was fine.
If I select large size the box cuts off part of the youtube video.
I hope the new theme helps me out so far it has. Thank you for your time.