campus streaming with gstreamer fails

[DI Mag Gergely Rakoczi]

Hi, 

we at Vienna University want to enable live campus streaming from one
lecturehall to another. So to begin, we try to stream a simple testvideo via
gstreamer to our media server (wowza) by using this simple command: 

gst-launch-0.10 -v videotestsrc ! "video/x-raw-yuv, format=(fourcc)I420,
width=(int)640, height=(int)480, framerate=(fraction)15/1" ! queue ! x264enc
bitrate=500 cabac=false pass=qual quantizer=27 subme=4 threads=0 bframes=0
dct8x8=false ! queue ! rtph264pay ! queue ! udpsink host=128.130.35.149
port=10004 

For your information, we have this cap for our videostream: 

caps = application/x-rtp, media=(string)video, clock-rate=(int)90000,
encoding-name=(string)H264,
sprop-parameter-sets=(string)\"Z0LAFrkQFAe2AiAAAAMAIAAAAwPB4sXU\\,
aM4XIA\\=\\=\", payload=(int)96, ssrc=(guint)2438042987,
clock-base=(guint)2413324687, seqnum-base=(guint)449100 

our SDP-file looks like this: 

v=0 
o=- 1208520720 2590316916 IN IP4 128.130.35.149 
s=MY FIRST PIPELINE 
i=N/A 
c=IN IP4 128.130.35.149 
t=0 0 
m=video 10004 RTP/AVP 96 
a=rtpmap:96 H264/90000 
a=fmtp:96 media=video; clock-rate=90000; encoding-name=H264;
sprop-parameter-sets=Z0LAFrkQFAe2AiAAAAMAIAAAAwPB4sXU,aM4XIA==;
ssrc=2438042987; clock-base=2413324687; seqnum-base=449100 

The rtp packets are recieved just fine, so firewall settings are not the
reason for our problem. We try to view the stream by JW Player (Longtail
setup wizard: rtmp stream, file: udp://0.0.0.0:10004, streamer:
rtmp://videotest.zserv.tuwien.ac.at:80/rtplive). However, the flash player
remains black and doesn't show our stream. 

Do you have any ideas where our problem might be? Is our gstreamer pipeline
wrong? 
Or is something missing in our sdp-file (it should be okay according to
<http://www.wowzamedia.com/forums/sho...th-Wowza/page7>
http://www.wowzamedia.com/forums/sho...th-Wowza/page7)? Any advice is
welcome :-) 

Thank you for your help in advance, 
gergely 

PS: our log file might help you finding a solution: 
 <https://institute.tuwien.ac.at/filea.../wowza_log.txt>
https://institute.tuwien.ac.at/filea.../wowza_log.txt

 

------------------------------------------------------------

Dipl.-Ing. Mag. rer.soc.oec. Gergely Rakoczi

E-Learning Web-Entwicklung, Dokumentation und Lehre

------------------------------------------------------------

TU Wien - Teaching Support Center

Gußhausstraße 28/E015

1040 Wien

Tel:  +43 1 58801 41544

http://tsc.tuwien.ac.at

rakoczi at tuwien.ac.at

 

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