Hey. I found and tested an sdk which can be simply integrated and has many sample programs like Addressing video quality: http://www.voip-sip-sdk.com/p_357-video-quality-resolution-codec-voip.html The sdk also seems to be good and is compatible with many pbxes. Have you used Ozeki VoIP SIP SDK before? I need further information before I order it. Thank you for your help.
William