Once the user has played the embedded video, YouTube presents them with a selection of other videos. These videos may contain videos you'd prefer not to have your user be presented with, such as videos by competitors or irrelevant videos that will distract them from your site.
YouTube used to provide an option to disable these related videos entirely by appending rel=0 to the video URL. They have now changed the behavior of this option to still show related videos, but only from the same channel as the embedded video. This means if the video is from your own channel, the user will be shown a selection of your own videos rather than those from other channels.
Unfortunately there is no built-in way to add the rel=0 parameter in Divi – if you include it in your embedded link it is simply stripped out (due in part to WordPress's own handling of embedded links).
There are several options for persuading Divi to restrict the related videos to the current channel.
Limit YouTube Related Videos to the Same Channel Site-Wide
You can use the following PHP code to add the rel=0 option to any YouTube videos embedded in your site:
Related Post: Adding PHP to the Divi Theme
Limit YouTube Related Videos to the Same Channel in the Video Module
As of version 2.8.3, Divi Booster adds an option to the video module allowing you to simply toggle a button to limit related videos to the current channel.
You'll find the option in the Video Module Settings under "Content > Video > Limit YouTube related videos to same channel". Set this to "Yes" and it'll restrict the related videos to the same channel as the current video.
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