In dynamic adjustment of data streamed over a network for display on an output device, display capability information of an output device is requested and received. The display capability information includes information indicating whether the output device is in a horizontal or vertical orientation relative to a user. Two or more data streams configured for display on the output device are formatted such that in a manner consistent with the display capability information and formatted for either vertical or horizontal orientation of the output device. The data streams include a user interface data stream and a separate video data stream. The user interface data and the video data are scaled separately. The streams are delivered to the output device via a network connection by a server to a client device platform used in combination with the output device.