www.wysiwygwebbuilder.com

Hello. On my webpage added html code for video, who is on my own server, beacuse it's too big to go to the server where the website is hosted. Everything is OK, but in the preview, the video is black. I would like to add a feature Poster (a preview thumbnail image for video).
For now, my code for embed video is that:

<iframe width="560" height="315"
src="http://my IP address/server/virtualni-zur-originalnih-makovcev-10-04-2021.mp4"
title=""
frameborder="0"
allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
allowfullscreen></iframe>

(This code copied from YT, but pefectly worked).

Why don't you use the HTML5 video object instead?

I tried, but due to the large video file (30 GB) it took me a very long time to load the preview (a few minutes). I typed in the link:
C:\xampp\htdocs\server\video.mp4 (The server is currently on the same computer as the WYSIWYG)
instead
http://Server IP/server/video.mp4

Now, however, the preview opens immediately. Thanks.

You can also use an absolute path, so you can upload the video to the server and use the path in the HTML video object.