Hi, I'm trying to write a Microsoft DirectShow source filter based on live media's RTP implementation. For mpeg4 it works perfectly. But for H264, the video is always jumpy. Sometimes with a lot artifacts. I tried the source filter with Cyperlink's H264/avc decoder, mpc-hc's MPCVideo decoder and ffdshow's software decoder. All have the same problem.
What I did was according to Microsoft's documentation http://msdn.microsoft.com/en-us/library/dd757808(VS.85).aspx I created mediatype with 'AVC1' as the media type, and use the sprop-parameter-sets from SDP as the the extra data form video format. set dwFlags to 4. Then call fSource->getNextFrame to get the next NALU, in the callback function with the NALU, I put 4 bytes length before it and pass them to the decoder. BTW, sources are from vlc and Haivision encoder. vlc play them perfectly. And vlc is using livemedia as well :( Thanks, Dong
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