There are a lot of members already suggested by that instead you can use the hyperlink like we are doing on the images.
[url=*link]*img thumbnail[/url]
One of the factors why we don't use the videos mostly to our forum because it takes time to load the whole thread.
I recently experience this kind of problem in a recent art contest I'm using my mobile phone and it looks a few minutes before the thread fully loaded the same with the videos for sure it consumes a lot of time and data.
Also, we are preventing other members from trolling with a clickbait image and direct to an unknown source.