Code:
[video]https://www.mysite.com/myvideo.mp4[/video]
Change https://www.mysite.com/myvideo.mp4 to the full URL of your movie.
You can also do the same tweaks as seen in ModDB, YouTube, and Twitch videos, such as:
Code:
[video=350]https://www.mysite.com/myvideo.mp4[/video]
Code:
[video=350,420]https://www.mysite.com/myvideo.mp4[/video]
In this case, 350 is the width, and 420 is the height of the video.
Enjoy it, and do not abuse it!