[Elphel-support] developing Elphel 353 camera code (for ZoneMinder video surveillance, RTSP)

[Sebastian Pichelhofer]

http://wiki.elphel.com/index.php?title=Usage_Tutorials

If your cameras flash image is not totally outdated you can also
reflash over a web gui:
http://blogs.elphel.com/2009/09/firmware-update-made-easier/

Regards Sebastian

On Fri, Oct 15, 2010 at 01:53, Gary Crum <gc2488 at gmail.com> wrote:
> Hi All, members of support-list at support.elphel.com,
> I am working with an Elphel 353 camera, and the ZoneMinder 1.24.2 software
> for video surveillance running on a separate computer running Linux Mint 9
> (based on Ubuntu 10.04).  Any related interest here?
>
> My main question:  Can anyone point me to instructions for flashing new code
> to the 353 camera?  I found and followed instructions for obtaining and
> building source code, but I don't see the link to flashing and testing
> instructions.
>
>
> Read on for more details!
>
> The Elphel wiki page about ZoneMinder use here is good, and suggests that
> the best solution for this setup will be to use the relatively new RTSP
> streaming support in both the camera and ZoneMinder:
> http://wiki.elphel.com/index.php?title=Elphel_cameras_and_Zoneminder
>
> I have tried using the RTP/RTSP solution, and with verbose debugging enabled
> in ZoneMinder I see this error in log files:
> 10/11/10 17:14:43.184461 zmc_m4[6275].FAT-zm_rtsp.cpp/471 [Unable to get RTP
> Info identifier from response 'RTSP/1.0 200 OK
>
> I obtained source code to ZoneMinder (using "apt-get source --compile
> zoneminder"), changed it to not require the RTP Info identifier, but then I
> see failure of the ffmpeg MJPEG codec to decode frames.  I wasn't quite able
> to enable full debugging in the ffmpeg library as used by ZoneMinder.
>
> So, now I want to go at it from the other side, looking at the
> implementation of RTSP in the Elphel 353 camera.  I "dove in" and setup my
> development environment for the camera firmware and compiled it all.
> Everything in KDevelop is looking good, free software is great.  I see the
> relatively new implementation of RTSP in the source file
> apps/astreamer/rtsp.cpp, with many commented out lines, maybe I can help
> improve this code and more fully conform to the RTSP specification.  (For
> example, the RTSP specification at http://www.ietf.org/rfc/rfc2326.txt does
> indeed require an RTP-Info field, in section 12.33.)
>
>
> I have not yet flashed the Elphel 353 camera with the code I have built, can
> anyone point me at instructions for doing this?  I think I came across these
> instructions at one time, but today I don't see the instructions, looking at
> http://wiki.elphel.com/index.php?title=Main_Page .
>
> The firmware on the camera I am using is release 8.0.4, and I just checked
> out and built the current 8.0.8 software using CVS.
>
> Thanks,
> -Gary
> gc2488 at gmail.com or crum at cs.utah.edu
> tel. (801)449-1426
>
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