EDIT: turns out the problem was fixed but did not affect the prior entry because of how it works in tangent with the SMF forum. heh so I'll keep this thread for posterity. And adjust the title with a "If having a"

At this time of entry the Aevo modification which allows visualization of video links, will at times look up the source and check on what it's native format is. If that native format is Widescreen HD it will show a very wide version of it that at this time of entry is bigger than the message space.
Example. Katers17 "World in Hand video"
To counter this problem. There are two options.
1. is to add #hq (which means high quality) after the url so it looks like this
http://www.youtube.com/watch?v=eTG5isJYURc#hq
To get this
or
2. Is to copy and paste the embedding option. Just dump it in like this.
<object width="480" height="295"><param name="movie" value="http://www.youtube.com/v/eTG5isJYURc&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/eTG5isJYURc&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="295"></embed></object>
Also Youtube does give embedding option to modify the size of the image if you want to enlarge it a bit. Also other options as well.
This is the basic option and you can see viewing options of LQ etc HQ to pick from.
And there you go.
- blath out