The technology described in this document can be embodied in a method that includes receiving, at an intermediate device disposed between a source device and a destination device, capability information indicative of media rendering capabilities of the destination device, and determining to process at the intermediate device at least a portion of data received from the source device. The method also includes generating, responsive to such determination, updated capability information to replace one or more media rendering capabilities of the destination device with corresponding one or more media rendering capabilities of the intermediate device. The one or more media rendering capabilities of the intermediate device pertains to the portion of the data to be processed by the intermediate device. The method further includes transmitting the updated capability information to the source device, wherein the updated capability information is usable by the source device to generate the data.