Providing digital video having customized graphics whose appearance and operation are specified by a graphics template expressed using one or more web-based protocols. One or more software modules, executing on a media server, identify, for a particular digital video, a markup language document which describes or identifies a customized appearance of one or more graphics to be incorporated into a presentation of particular digital video and shown to an identified audience. The markup language document may be an Extensible Markup Language (XML) document or a HyperText Markup Language (HTML) document. The media server streams the particular digital video having the one or more graphics to a member of the identified audience in accordance with the markup language document. An HTML rendering engine, executing on the media server, may pass through one or more audio streams to be incorporated into an output stream without re-encoding the one or more audio streams.