[Live-devel] About the openRTSP source code

[Ross Finlayson]

>  >>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.
>
>>To do this, you would modify (or extend) the "H264VideoFileSink" class.
>
>May I ask the reason why the openRTSP program doesn't save received 
>SPS and PPS NAL units of H.264 into a local video file?

Because the code wasn't written to do this.

Note that these NAL units aren't part of the RTP stream, but are 
instead sent as an encoded string in the stream's SDP description. 
However, there exists a function ("MediaSubsession:: 
fmtp_spropparametersets()()") to access this string, and another 
function ("parseSPropParameterSets()") to decode this string into 
binary data - which you could, if you wished, write to a file.

Sometime in the future, I might update the "H264VideoFileSink" class 
to do this itself....
-- 

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