How to make videos autoplay with sound in chrome or PWA

Chrome's updated it auto play policy which block user from autoplaying the video. I am having signage board where it is most important feature for my application. Is there any way I can autoplay the video? Please let us know if any solution or workaround is available. As per google document you can run video with sound in PWA app. I have tried that as will but unable to play the video. Thank you in advance. (https://developers.google.com/web/updates/2017/09/autoplay-policy-changes#new-behaviors)

I have also referred multiple stack overflow question but haven't found any solution yet.