The Lync 2013 client contains some hard-coded behavior when using H.264 SVC which determines the maximum video resolutions and frame rates that a given workstation can send and receive.

Unlike with RTV this criteria is more complex due to additional features provided by the new SVC codec’s implementation.

But with the inclusion of H.264 SVC as the default video codec for Lync 2013 this story changes quite drastically.

This is true regardless of the client version, even for a Lync 2013 client sending or receiving RTV in an interoperability scenario.There is some gray-area in the industry in terms of clarifying exactly what high definition actually means in relation to video.Although there is no actual definition, generally throughout North America it is understood as “any video image with more than 480 horizontal lines”.’ mode is included in the list then the second requirement has also been met.If this string is not included then the workstation cannot utilize the graphics processor for video decoding for SVC video in Lync 2013.