I’m running a WordPress multisite where each site has a full-width video background. Everything performs flawlessly in Chrome, Firefox, and Edge, but Safari—both current and older releases—refuses to play the videos. All clips are self-hosted and currently delivered in MP4, WebM, and OGV. Your task is to pinpoint why Safari is stalling and implement a clean, future-proof solution so the same video background loads smoothly across every major browser without breaking any existing theme or plugin functionality inside the network. Key deliverables: • Diagnose the exact cause (codec, MIME type, preload policy, JavaScript, or server headers). • Apply the necessary fix—whether that’s re-encoding, modifying HTML5 video markup, tweaking .htaccess/Nginx headers, or adding a lightweight JS fallback—so Safari plays the background as reliably as the others. • Provide a short after-action note summarizing what went wrong and the steps you took, so I can replicate the fix on new sites in the network. I can supply admin access to a child site and will test the result in multiple Safari versions before sign-off.