I have a video on my homepage that I want to autoplay and loop upon entering the site, so that customers don’t have to click play on video.
If the section supports autoplay video you should only need to ensure a video is muted for a browsers autoplay to be allowed.
https://developer.chrome.com/blog/autoplay/
No you cannot override this as it’s a major user annoyance.
If you do not have a section supporting autoplay video, you either need to use a custom-liquid section and embed the video or html code for a video HTML element with autoplay attributes.
If you need this customization then contact me by email for services.
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.