[FFmpeg-devel] SDP for H.264 about extradata

[Steve Jiekak]

Hi everyone,

I saw that some functions in sdp.c use extradata in a AVCodecContext
structure
for writing SDP parameters, more specifically the sprop-parameter-sets
string. So I think
the codec Context should be  for a H.264 file.

So what is this extradata ( used by function extradata2pset() ), and were is
it initiallized?
Also, is it already present for all AVCodecContext for H.264 video??

Thanks, and have a great week-end
Steve