If an MTSI client includes any video codecs in the SDP offer or answer, procedures to compute b=AS are left to the discretion of the implementation.

Table N.x shows example values of b=AS in IPv4 and IPv6 for each source bit-rate and image size pair of H.264/AVC. These values are determined from encoding a variety of content with the codec targeting a particular source bit-rate and then measuring the fluctuations of the encoded bit-rate in order to determine the recommended b=AS values. As the source bit-rate increases, the relative differences of b=AS values in IPv4 and IPv6 decrease as the proportion of RTP/UDP/IP headers in the packet decreases, but the required margin for the fluctuations increases. Different source bit-rates and b=AS values can be used for the same image size depending on service policy, alternative codec configurations, and the amount of bit-rate variation introduced by the rate control algorithm implementation.