[Live-devel] Questions about project to dump Images frames from H264 stream using live555 and ffmpeg

[Ross Finlayson]

> I have added the following lines into "afterGettingFrame" method.
> 
> unsigned numSPropRecords;
> SPropRecord* sPropRecords = parseSPropParameterSets(fSubsession.fmtp_spropparametersets(), numSPropRecords);
> 
> numSPropRecords is always 0
> and sPropsRecords is always NULL

That's probably because "fmtp_spropparametersets()" returned NULL, which suggests that the stream's SDP description - for some reason - did not contain a proper "a=fmtp: ..." line.  To help figure out what's going wrong, please let us know the stream's SDP description, and also the result of calling "fmtp_spropparametersets()".

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

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