i.MX ProcessorsのトピックRTP Streaming using gstreamer fails - gstrtpbin element missing

RTP Streaming using gstreamer fails - gstrtpbin element missing

ottoblom — Fri, 02 May 2014 22:29:10 GMT

Hi There,

I followed the GStreamer RTP Streaming instructions, but my system doesn't have the gstrtpbin element that is being used. However, I do have udpsrc and various other elements from the plugins-good package. When I rebuild the plugin registry I see a few errors that could be a hint to someone, but unfortunately not to me. Does anyone know what could be the problem ? I'm using the 4.1.0 BSP.

MAX resolution 800x480

(gst-plugin-scanner:3559): GLib-GObject-WARNING **: cannot register existing type `GstRtpSsrcDemux'

(gst-plugin-scanner:3559): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_element_register: assertion `g_type_is_a (type, GST_TYPE_ELEMENT)' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_pad_template_new: assertion `caps != NULL' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_element_class_add_pad_template: assertion `GST_IS_PAD_TEMPLATE (templ)' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_pad_template_new: assertion `caps != NULL' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_element_class_add_pad_template: assertion `GST_IS_PAD_TEMPLATE (templ)' failed

(gst-plugin-scanner:3559): GLib-GObject-WARNING **: cannot register existing type `GstRTPMux'

(gst-plugin-scanner:3559): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

(gst-plugin-scanner:3559): GStreamer-CRITICAL **: gst_element_register: assertion `g_type_is_a (type, GST_TYPE_ELEMENT)' failed

Thanks,

/Otto

Re: Problems decoding RTP video streams using gstreamer

ottoblom — Fri, 02 May 2014 22:42:11 GMT

Btw, just to clarify - I'm running this on the imx6 board. Also, here is the ./configure output during build. It looks good assuming GstRtpBin is part of the rtpmanager.

configure: *** Plug-ins without external dependencies that will be built:

alpha

apetag

audiofx

audioparsers

auparse

autodetect

avi

cutter

debugutils

deinterlace

effectv

equalizer

flv

flx

goom

goom2k1

icydemux

id3demux

imagefreeze

interleave

isomp4

law

level

matroska

multifile

multipart

replaygain

rtp

rtpmanager

rtsp

shapewipe

smpte

spectrum

udp

videobox

videocrop

videofilter

videomixer

wavenc

wavparse

y4m

configure: *** Plug-ins without external dependencies that will NOT be built:

monoscope

configure: *** Plug-ins with dependencies that will be built:

annodex

cairooverlay

oss4

ossaudio

v4l2src

configure: *** Plug-ins with dependencies that will NOT be built:

1394

aasink

cacasink

cairo

directsoundsink

esdsink

flac

gconfelements

gdkpixbuf

halelements

jack

jpeg

osxaudio

osxvideosink

png

pulseaudio

shout2

souphttpsrc

speex

sunaudio

taglib

wavpack

ximagesrc

Re: Problems decoding RTP video streams using gstreamer

ottoblom — Fri, 02 May 2014 23:15:20 GMT

I disabled all other plugins (bad, ugly, farsight) and now the gstrtpbin showed up properly. So there has to be some form of conflict

Re: RTP Streaming using gstreamer fails - gstrtpbin element missing

LeonardoSandova — Mon, 05 May 2014 16:14:49 GMT

Otto, when the conflict occurred, how did you add the elements? Did you use Yocto or LTIB to do the latter?

Leo

Re: RTP Streaming using gstreamer fails - gstrtpbin element missing

ottoblom — Mon, 05 May 2014 16:33:40 GMT

Leo, we are using LTIB. I'm suspecting the farsight plugins, since they also provide RTP functionality, but have not verified it yet.