Hej Estelle
Using your live555 libraries and ffmpeg, I am trying to write an h264
player that uses RTSP. Although I successfully seem to be receiving
the RTP packets, they are not being decoded. In researching this problem
I have noticed the following:
ffmpeg h264 decoder seems to be looking for 001
0x000001 is the start code for any H.264 NAL unit!
When stepping through mplayer code, it finds this 001.
When I look at the stream with Wireshark, I do not see a 001.
The start units are not transmitted via RTP. The marker bit indicates,
that a NAL-unit is finished - then your client has to add the start code
to the currently received frame
My program that uses live555 and ffmpeg can't find 001 in the frame.
Questions:
Is the live555 library adding this 001 and if so where and how do I tell
it to do it?
afterGettingFrame1() function in your Client - most probably a subclass
of MediaSink
take a deeper look into RFC3984 for H.264 over RTP and the H.264
specification itself which answers most of you questions:
http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-H.264-201003-I!!PDF-E&type=items
jens.
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