> Given that I would expect this to be a quite common task, I wanted to ask if 
> there are some helper classes/functions in live555 that already prase the SPS 
> and give me what I want.

No there aren't - because the “LIVE555 Streaming Media” software doesn’t do any 
video decoding (or encoding), and what you’re asking for is a H.264 decoder.  
Specifically, you want to decode the SPS NAL unit - the one that begins with 
0x67 - to figure out the video width and height.

You can do this - but you’ll need to look in H.264 decoding software (e.g., 
“ffmpeg”) for the answer.  Or you can look for the official ISO/IEC document 
that describes H.264:
        ISO/IEC 14496-10


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


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