A method includes generating, at a first computing device, a header for media packets, the header including a header flag in a first portion of the header and a variable length header field in a second portion of the header, the first portion contiguous to the second portion, wherein the header flag includes a value indicating a length of the header field. The method also includes generating a body for the media packets, generating the media packets based on the header and the body, generating a protocol report based on media data, and sending the media packets and the protocol report to a second computing device. The protocol report includes information to enable the second computing device to account for successful receipt of the body of the media packets by the second computing device.