[iframe] How to make an embedded Youtube video automatically start playing?

In my project, there is a video gallery module. In this module, there are two options: direct FLV uploading, and adding a video embed code from YouTube.

I am writing some embed code for a div element (actually, the embed code comes from database). I want to make this video begin playing automatically.

<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/zGPuazETKkI" frameborder="0" allowfullscreen></iframe>

This is a sample embed code from YouTube. I want to make this video play automatically using JavaScript.

This works perfectly for me try this just put ?rel=0&autoplay=1 in the end of link

<iframe width="631" height="466" src="https://www.youtube.com/embed/UUdMixCYeTA?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>

Add &autoplay=1 to your syntax, like this

<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/zGPuazETKkI&amp;autoplay=1" frameborder="0" allowfullscreen></iframe>

You have to use

<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/zGPuazETKkI?autoplay=1" frameborder="0" allowfullscreen></iframe>

?autoplay=1

and not

&autoplay=1

its the first URL param so its added with a ?

<iframe title='YouTube video player' class='youtube-player' type='text/html'
        width='030' height='030'
        src='http://www.youtube.com/embed/ZFo8b9DbcMM?rel=0&border=&autoplay=1'
        type='application/x-shockwave-flash'
        allowscriptaccess='always' allowfullscreen='true'
        frameborder='0'></iframe>

just insert your code after embed/