Apple chief Steve Jobs has warned in a reply to an open latter that Ogg Theora wouldn't necessarily be the best choice for HTML5 video. Addressing a call by Free Software Foundation Europe to use the open-source codec for plugin-free video, Jobs warned that it may infringe on patents and could face a lawsuit, though not necessarily from Apple. He suggested that H.264 fit the definition of an open standard and admitted it wasn't necessarily what open-source advocates would expect.