>For the next stage we would like to use H264 codec, so I think we should >write our own H264VideoStreamDiscreteFramer, is it correct? Yes, you need to write your own subclass of "H264VideoStreamFramer"; see http://www.live555.com/liveMedia/faq.html#h264-streaming -- Ross Finlayson Live Networks, Inc. http://www.live555.com/