Delivering auto-play media content element from cross origin resources

Systems and methods for delivering cross-site auto-play media are described herein. The server can receive, from a client device, a request for media content at a first domain embedded in a content element from a second domain. The request can include an identifier indicating that the client device is configured to restrict cross-domain redirection. The server can determine, responsive to identifying the identifier indicating that the client device is configured to restrict cross-domain redirection, that the request comprises a content type header having a first predetermined value. The server can generate, responsive to the determination, a response comprising the media content element in a body of the response. The server can transmit the response to the client device. Receipt of the response can cause the client device to extract the media content element from the body of the response and to render the media content element.