1. A method to monitor streaming media content, the method comprising: extracting, using a processor, first metering data from media content to be provided to a content presentation device via a transport stream, the first metering data identifying at least one of the media content or a source of the media content; combining, using the processor, the first metering data with second metering data obtained independently of the media content, the combined metering data not being decodable by a meter associated with the content presentation device; and transcoding the combined metering data, using the processor, to form transcoded metering data having a format decodable by the meter associated with the content presentation device.