Three way of adding YouTube video to your web site to play Autoplay
Copy video link as below
For Autoplay
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Copy video link
For Autoplay
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Copy video link
For Autoplay
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If you want video play normal do not add autoplay=1; but you need to add http: that video be able to paly.
Or see below Link video
Link: https://www.youtube.com/watch?v=XxRelcoTiRQ