[Live-devel] H264 over RTP/RFC 3984

[Ross Finlayson]

>Right now, I'm developing h264 over rtp streaming. My question is 
>the current version of live555 needs SEI packet of h264 or just 
>video data packet?
>That is, if I packet the H264 video data according RFC 3984, no SEI 
>data, that's OK for live555 parsing?

Yes, our implementation of H.264/RTP reception - as used in VLC - 
complies with RFC 3984.


>But VLC player cannot recognize the stream, VLC selects live555 
>demux, I tried many times.

If you are packing H.264 NAL units into RTP packets as specified by 
RFC 3984, the "LIVE555" code in VLC should be able to receive them 
OK.  (Make sure that the NAL units packed within RTP packets do *not* 
include the initial 0x00000001 code.)

Assuming that your stream is properly complaint with RFC 3984, then 
the problem with VLC is probably with the H.264 decoder, which is not 
our software (and therefore off-topic for this mailing list). 
However, one common problem is that the decoder often needs to see 
initial PPS and SPS NAL units to work properly.  If you are not 
including these in the stream's SDP description (if you're using 
SDP), then you will need to insert PPS and SPS NAL units at the start 
of the stream (or frequently, periodically within the stream).
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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