Okay, thanks. I thought the SPS would be related to SDP... But makes sense, I 
just recently realized it's encoded in a NAL unit.

 -----Ursprüngliche Nachricht-----
Von: live-devel [mailto:live-devel-boun...@ns.live555.com] Im Auftrag von Ross 
Finlayson
Gesendet: Donnerstag, 23. März 2017 16:45
An: LIVE555 Streaming Media - development & use <live-de...@ns.live555.com>
Betreff: Re: [Live-devel] get H.264 frame width and height out of SPS

> 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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