There is a feature that some people are not aware of for posting videos from other sites and I encourage you to use this feature instead of posting blind links.

1. Paste the link to the video in the reply message
2. Surround the link with the VIDEO and /VIDEO bbcode tags as displayed below and the post will appear with the video image and description automatically

HTML Code:
[video]www.youtube.com/sample_video[/video]
3. Ensure you use the square brackets and do not forget to use the "/" otherwise it will return an error


Alternatively

You could use the "Insert Video" option above the reply box. It looks like a film strip, directly to the left of the speech bubble.[/QUOTE]


If you do the above, the post will appear with the video embedded like this;