Emfield Emvideo compatibility

Hi,
I had problems attaching a video with the right preset inside a wysiwyg editor.
To explain better the issue, this is my configuration:

- node "news" with a wysiwyg textarea
- node "video" referenced by news node
- "video" has a Emfield emvideo cck field

When I add a video to a news, the video preset is not taken, displaying the video with the original video width and height (for youtube is 425x350).

The attached patch fixed the issue for me.