yet another udpsink question from a new user

[Tomaz Canabrava]

Hey people,

Sorry if this was already asked tons of times before, but I tried to do my
homework. I'm eating GStreamer documentation and managed to create a webcam
streaming that doesn't use v4l by pooling the images directly from it and
creating a pipeline througth appsrc to autovideosink, and it works.

when I try to create a pipeline to udpsink, however, it only calls the
data_callback once, and doesn't streams anything.

My pipeline:

appsrc -> videoconverter -> avenc_mpeg4 -> rtpmp4vpay -> udpsink

My configurations:

  /* setup pipeline */
  GstElement *pipeline   = gst_pipeline_new ("pipeline");
  GstElement *appsrc     = gst_element_factory_make("appsrc", "source");
  GstElement *conv       = gst_element_factory_make("videoconvert", "conv");
  GstElement *videosink  = gst_element_factory_make("xvimagesink",
"videosink");
  GstElement *videoenc   = gst_element_factory_make("avenc_mpeg4",
"ffenc_mpeg4");
  GstElement *payloader  = gst_element_factory_make("rtpmp4vpay",
"rtpmp4vpay");
  GstElement *udpsink    = gst_element_factory_make("udpsink", "udpsink");
  GstElement *freeze     = gst_element_factory_make("imagefreeze",
"imagefreeze0");
  GstElement *colorspace = gst_element_factory_make("ffmpegcolorspace",
"colorspace");

  g_object_set(G_OBJECT(udpsink), "host", "127.0.0.1", "port", 5000, NULL);
  g_object_set(G_OBJECT(payloader), "config-interval", 60, NULL);

  /* setup */
  g_object_set (G_OBJECT (appsrc), "caps",
          gst_caps_new_simple ("video/x-raw",
                     "format", G_TYPE_STRING, "RGB",
                     "width", G_TYPE_INT, width,
                     "height", G_TYPE_INT, height,
                     "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
                     "framerate", GST_TYPE_FRACTION, 0, 1,
                     NULL), NULL);

// WORKS
  gst_bin_add_many (GST_BIN (pipeline), appsrc, conv, videosink, NULL);
  gst_element_link_many (appsrc, conv, videosink, NULL);

// DOESNT WORKS
  gst_bin_add_many (GST_BIN (pipeline), appsrc, conv, videoenc, payloader,
udpsink, NULL);
  gst_element_link_many (appsrc, conv, videoenc, payloader, udpsink, NULL);

  /* setup appsrc */
    g_object_set (G_OBJECT (appsrc),
            "stream-type", 0,
            "is-live", TRUE,
            "format", GST_FORMAT_TIME, NULL);


references:
 [1] : https://gist.github.com/beeender/d539734794606a38d4e3
 [2] :
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-udpsrc.html
 [3] :
http://stackoverflow.com/questions/34009566/how-to-send-qimages-via-gstreamer-over-udp

and a few more. Most of the code I found on the internet is about creating
pipelines via gst-launcher, I know  I can create one from it but didn't
managed to build a plugin for my stuff to test, yet.

Thanks for any help,
Tomaz
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