sorry, forgot how to embed media
Recently I noticed that copied youtube video addresses defaulted to link rather than to video embed when posting on the site. So in order to clear out whatever code is doing that, I first paste the address to google translate even though I don't indent to use the translate function. And then I copy again out from the translate box and then paste it straight into a TN post. I usually do that with articles as well since its sometimes difficult to weed out whatever automatic font settings are being copied along with the text like text size and font style.
Although that's when I use the PC. With the smartphone, it doesn't work and always makes it into a link. My experience at least.