[Elphel-support] Gstreamer JP4 plugin issue

[Oleg Dzhimiev]

Dear Ángel,

I've tried gstreamer jp4 - it worked on Kubuntu 9.10. And at the beginning I
was having an error "gst ERROR: pipeline could not be constructed: no
element "rtspsrc" ".

1. The error gone after I installed "gnome-media".

2. Then I had to install some gstreamer dev libraries and
gst-plugins-elphel:
http://code.google.com/p/gst-plugins-elphel/wiki/HowToInstall.
What's your output of "*gst-inspect bayer2rgb2 * gst-inspect jp462bayer"?

Oleg

On 22 February 2010 10:02, Ángel <elphriend at gmail.com> wrote:

> Dear elphriends,
>
> I am playing with the GStreamer JP4 plugins.
>
> I call gst-launch with the following pipe (previously I set the camera up
> to 1920x1088 JP46 mode):
>
> $ gst-launch-0.10 rtspsrc location=rtsp://xxx.xxx.xxx.xxx:554 !
> rtpjpegdepay ! jpegdec ! queue ! jp462bayer ! queue ! bayer2rgb2 ! queue !
> ffmpegcolorspace ! videorate ! "video/x-raw-yuv, format=(fourcc)I420,
> width=(int)1920, height=(int)1088, framerate=(fraction)25/1" ! autovideosink
>
> as seen on
>
>
> http://blogs.elphel.com/2009/11/interfacing-elphel-cameras-with-gstreamer-opencv-opengl-and-python-get-profit-of-dsp-or-gpu-based-optimisation-control-camera-settings-from-python-application-or-human-interface-device-hid/
>
> and I get the following error:
>
> (gst-launch-0.10:4928): GLib-WARNING **: g_set_prgname() called multiple
> times
> Estableciendo el flujo a PAUSADO ...
> El flujo es en vivo y no necesita PRECACHEADO ...
> Estableciendo el flujo para REPRODUCCIÓN ...
> New clock: GstSystemClock
>
> ** (gst-launch-0.10:4928): WARNING **: bayer2rgb20: size 3133440 is not a
> multiple of unit size 0
> ERROR: del elemento
> /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: Error en el
> flujo de datos interno.
> Información adicional de depuración:
> gstbasesrc.c(2378): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0:
> streaming task paused, reason error (-5)
> Execution ended after 3535369531 ns.
> Estableciendo el flujo a PAUSADO ...
> Estableciando el conducto a PREPARADO …
> Estableciendo el conducto a NULL …
> Liberando la tubería…
>
> Translation: ERROR on element
> /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0/GstUDPSrc:udpsrc0: internal data
> flow error
>
> The pipe:
>
> gst-launch rtspsrc location=rtsp://xxx.xxx.xxx.xxx:554 latency=40 !
> rtpjpegdepay ! jpegdec ! autovideosink
>
> shows the undemosaiced JP4 stream successfully.
>
> Thank you,
>
> Ángel.
>
> --
> Elphel NC353L-369 (12-36 VDC) + Computar H2Z0414C-MP
>
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>
>
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