I am trying to replace gifs with mp4s on my website. Currently its working great in Chrome and Firefox, but the behavior is odd in Safari. <video autoplay loop muted playsinline defaultmuted preload="auto"> <source src="/path/to/video.mp4" type="video/mp4"> </video> This video is an h264 mp4 video with no audio track. Firefox, Chrome on my Macbook: Works as expected (autoplay's like it were a gif) iOS Safari without Low Power Mode: Works as expected iOS Safari with Low Power Mode: Autoplays but there is a play button on top that disappears when tapped. macOS Safari: Does not autoplay. A play button appears and it plays if clicked. I have been following https://developer.apple.com/documentation/webkit/delivering_video_content_for_safari as well as other guides on the internet and it still isn't working. I'm pretty sure there is a recent change responsible for this because it used to work in an older version of desktop safari.