I start looking at the source code of openRTSP, and try to modify the code to add SPS an PPS NAL units of H264 into saved file. I am a little lost in it. Could you give me a clue of which functions I need to have a look at? By the way, what is the difference in use between H264VideoRTPSource and H264VideoRTPSink?<br><br>Thank you very much!<br><br>Hong<br><BR><BR>Hong Liu<br>------------------------------<p> 
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