[Elphel-support] Elphel Stream problem..

[Paul Shersby]

Hi, we have the camera working now and are trying to get a stream through
FFMPEG

Please see comments from Snorri in Germany below.

P

-----Original Message-----
From: Snorri P. Sigurdsson
Sent: 26 August 2010 17:26
To: Paul Shersby
Subject: WG: to Elphel

:-)

The camera is now working, the boot block has been written. We performed the
steps you described - using netboot with '-cmd boot', then with '-cmd all
-reflash'. Maybe only '-reflash' was missing? Now we have the precompiled
image 8.0.8.41 running again.

Our actual topmost problem with the camera is to receive a stream at all,
either over rtsp or http, using the libavformat/libavcodec libraries from
the ffmpeg project. We get a stream with some client programs: VLC player
and one debian compile of mplayer. It doesn't work with ffplay, any
self-compiled release of mplayer, and openRTSP of the live555 project.

But the openRTSP client gave us a clue on what is wrong: The 'Transport:' 
syntax doesn't conform to RFC2326. Here is what openRTSP says:
---------------------------------- BEGIN SNIP Received a complete SETUP
response:
RTSP/1.0 200 OK
CSeq: 4
Session: 47112344
Transport: RTP/AVP;unicast;destination=192.168.178.71;port=52546

Failed to setup "video/JPEG" subsession: Missing or bad "Transport:" 
header
---------------------------------- END SNIP

So astreamer says "port=XXXX" instead of saying
"client_port=XXXX-XXXX;server_port=XXXX-XXXX". Is this intended? 

We compiled the source code from CVS, intending to modify 'rtsp.cpp', but
after installation of the unmodified image 'str' and 'lighthttpd' were not 

running. But we're not sure, if we missed something simple. We're continuing
work on that.