[Elphel-support] Elphel Stream problem..

[Alexandre Poltorak]

Paul,

FFMPEG have problems decoding our MJPEG stream. It seems like FFMPEG can not
find the end of frame. I am not good enough to debug it with GDB. :(

VLC, MPlayer and GStreamer works..
Alexandre

On Thu, Aug 26, 2010 at 6:35 PM, Paul Shersby <paul at film360.com> wrote:

> 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.
>
>
>
>
>
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>
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