We have an MP4 video on our site; it plays fine in IE9+, Firefox, Chrome, and Chrome on mac. However, on Safari, the video doesn\'t play at all - it does trigger a \"stalled
This could indeed be an issue of missing byte-range support, depending on the version you are using. It was added to the DMSDownloadServlet in MAGNOLIA-3855 (Magnolia fix version 4.4.6).