Multiview for 9 Youtube news channels. Can be edited to add/edit your channels of preference.
To add/edit channel, just add/edit another line and replace the youtube video ID. You can also get the full string (https://www.youtube.com/embed/VideosID) on the video share option.
<iframe src="https://www.youtube.com/embed/VideosID?autoplay=1&mute=1" allow="autoplay; encrypted-media" allowfullscreen></iframe>