[Closed] How to put video controls code in posts

Hi , i recently have bought all Addons and import my old big forum into wpforo and i try to keep code like this

<p><video controls="controls" width="700" height="430"><br /><source src="https://download.naturisme-france.com/20190901_M6_Capital_Joyaux_du_patrimoine_naturistes_salamandre.mp4" type="video/mp4" /> <br /></video></p>

on my old posts which are now on wpforo and the video doesnt appear and when I edit code the video is there but when i try to save the is a message notification like :

"Content caracters lenght must be greater than 2" (because of the 2 min caracters mandatory) and in the source code all the video controls code disapears

when I try to put only https://download.naturisme-france.com/20190901_M6_Capital_Joyaux_du_patrimoine_naturistes_salamandre.mp4

I cant adjust the size