[Live-devel] H264VideoRTPSource question

[Jeremy Noring]

I've written something similar using FFDShow's decoder filter that works
fine, so it sounds like something in your directshow filter implementation
is wrong; I'd try the dshow newsgroups.

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<http://msdn.microsoft.com/en-us/library/dd757808%28VS.85%29.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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>
>


-- 
Where are we going?
And why am I in this hand-basket?
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