[Live-devel] Develop H.264 Support

[Jerry Johns]

Hi,
     If there is anything closely definable as a standard H.264 format, it
would be that ITU JVT spec pointed out by Dave; the NAL unit delimiter
0x00000001 should be present to identify NAL units, and if ur gonna talk
bout elementary stream H.264, then thats the way to go and i dont see the
confusion (if ur talking bout container types like mov, and mpeg4, thats not
elementary and a different story)

also, to get frame rate, you need to find the NAL unit of type SEI
(supplemental enhancement information) and there is a picture timing message
structure in there that governs current slice timing
only problem is most of this data is exp golomb coded so getting at it
requires a litlte bitta work (exp golomb is VLC type code i think)

i've managed to get a basic H264 VideoStreamFramer going that does RTP
packetization of H.264 and it works fine with VLC media player

if you use single NAL unit mode + FUA framing, you can implement it quite
easily i think

Jerry
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