A real time IP video conference server of high performance running over win32 or linux os. Accepts multiple live video streams (such as H.263, H.263+, H.264 or MPEG-4) as conference members, extracts frames from them and combines into one, and streams back to the members. Now supports streams encapsulated in RTP (IETF standards RFC 2190, RFC 2429, RFC 3984, etc), mpeg-2 ps (program stream) or ts (transport stream) formats. Supports up to 16 members in one conference. Each member's picture position and size in the final conference frame can be easily configured. Varied video stream formats in one conference are supported. i.e. A member using H.263, a member using H.264 and another using MPEG-4 can join a same conference without problem. That significantly reduces complexity when deploying Video over IP applications. With precise control ability in conference video resolution, quality, frame rate and bandwidth, you can reshape final video streams fast and simple to adapt to your application environments, such as IMS and 3G. Also provides professional image post processing functions such as logo, watermark and subtitle overlay. Conference member's stream attributes can be easily imported from or exported to SDP files, which can be used to collaborate with other applications in the whole scenario.