By default, users can add YouTube videos to their blogs and websites by embedding them. You can restrict their ability to embed your videos. You can set different rules for videos that you own (Licensed content) and videos you claim (User uploaded content).
To restrict the sites where users can embed your videos:
Click the pencil icon to the right of the Block embedding section.
From the User uploaded content drop-down box, select the embedding rule for videos that are claimed against one of your assets.
- Allow embedding on all domains (the default) – No restrictions on embedding
- Block embedding on all domains – Don't allow any embedding of the videos
- Block embedding on domains matching – Don't allow users to embed videos to sites whose URLs you enter in the text box that appears when you select this option.
- Allow embedding only on domains matching – Block embedding on all sites except for those whose URLs you enter in the text box.
From the Licensed content drop-down box, select the embedding rule for videos on your channels.