Video in the Slider/Header don´t work

Hey Guys,

in my page, the video in the slider does not work. It will appear in the Chrome and Safari browsers. It just does not work in Firefox. I hope you can help me out.

Many Thanks!



Hi @wwwerbeagentur,

I checked in firefox and it seems to be working fine on my end.

May I know which version are you using and what OS.



many thanks for the quick support. I use OS X El Capitan version 10.11.6 (15G22010) and the Firefox Quantum version 66.0.5. On my mobile phone Sony XZ3 it works too.

Hey @wwwerbeagentur,

This is a known issue with the 66.0.5 version of Firefox. This happens in Windows too. For now, please use the LayerSlider which is another slider plugin bundled in X. I’ve tested LayerSlider and it auto-plays the video smoothly both in Chrome and Firefox.

For more details about LayerSlider, please see


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thanks a lot for the information!

You’re most welcome!

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