html - can't stop autoplay on youtube embedded videos in slider -

there plenty of information on , fix of setting autoplay or autostart false seems simple.

only doesn't work me @ all, have tried every combination can think of.

i embedding video in layer slider slide in wordpress , video playing stopping slide transition next one.

any appreciated.

below examples of various ways i've tried make work. same issue on chrome on safari, , mobile

<iframe width="560" height="315" src="https://www.youtube.com/embed/phclpgg2wom?autoplay=0” frameborder="0" allowfullscreen=“></iframe>  <iframe width="560" height="315" src="https://www.youtube.com/embed/phclpgg2wom?autoplay=false" type="audio/mpeg" frameborder="0" allowfullscreen></iframe>  <iframe width="560" height="315" src="https://www.youtube.com/embed/tujjv0ezsui" frameborder="0" allowfullscreen autoplay="0" autostart="0" type="audio/mpeg"></iframe> 

go slider settings, , turn off autoplay mode under "video" section. since not working on code self. check link given below, useful.

https://wordpress.org/support/topic/stopping-autoplay-on-iframe-videos/