link demux

[Chuck Crisler]

Have you tried testing the pipeline with gst-launch? That is a quick and
easy way to work out most of the details. Here is one of my pipelines for
receiving video in MP2T from a UDP source and displaying it. You may need
to add caps. That means doing a gst_element_link_filtered (or something
like that).

gst-launch udpsrc port=$1 !  mpegtsdemux ! video/x-h264 ! ffdec_h264 !
xvimagesink

You might also want to examine the core file and see where it crashed. That
can give some great guidance. If needed, post the stack trace.

gdb path-to-binary core.1234
bt



On Wed, Jun 26, 2013 at 2:52 PM, "Simon Krütt" <the_simi at web.de> wrote:

> Hey!
>
> can someone help me please to link my demuxer to another element.
> so far I tried to link the pads like this:
>
>   gst_bin_add_many (GST_BIN (pipeline), videosrc, demux, queue, videoenc,
> rtppayload,
>        NULL);
>   sinkpad = gst_element_get_request_pad ( queue, "queue_sink");
>   srcpad = gst_element_get_static_pad (demux, "src");
>   if (gst_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK)
>     g_error ("Failed to link video queue to demux");
>   gst_object_unref (srcpad);
>
>
> and I'm getting this error:
>
>  (mp4test:32152): GStreamer-CRITICAL **: gst_pad_link_full: assertion
> `GST_IS_PAD (srcpad)' failed
> ** (mp4test:32152): ERROR **: Failed to link video queue to demux
> Trace/breakpoint trap (core dumped)
>
> Best regards,
>
> Simon
>
>
>
>
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>
>
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