install However, process can take some time and we dont recommend downloading it from a random website as it can contain malware. The poster will autoplay even if you have blocked videos from auto-playing. RELATED: How to Install Extensions (Add-ons) in Mozilla Firefox. Theres also a reduce motion user setting that developers can respect by reducing or removing CSS and JavaScript web animations. Using a media query we can display a different animated image file based on the screen size or orientation: All of this is possible with video you can use matchMedia to do any media queries in JavaScript and programmatically change the src of a