no such pad 'video_%04x' in element "tsdemux"

[Maxime Louvel]

thanks Emile,
it works

On Wed, May 23, 2012 at 12:39 PM, Emile Semmes <emile.semmes at e6group.com>wrote:

>  Hi Maxime,
>
> For mpegtsdemux, you can't link the src pads until they are added. This
> happens during runtime so you'll need to add a signal handler on the
> pad-added signal from the mpegtsdemux element. Take a look at section 8.1
> of the documentation (
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-pads.html)
> for an example on how this is done. Section 8.1.1 uses oggdemux but the
> method is the same. In your callback, you can link your pad there. Pay
> attention to the caps since you don't until later if it's an audio or video
> track.
>
> HTH,
>
> Emile
>
> --
> Emile Semmes
> Software Consultant
> e6 Group, LLC
> Office: (630) 376-0626www.e6group.com
>
>
>
> On 5/22/2012 8:56 AM, Maxime Louvel wrote:
>
> HI,
>
>  I'm trying to build the following pipeline with a C application :
> gst-launch -e udpsrc port=5000 caps="application/x-rtp, media=video,
> encoding-name=MP2T-ES" ! rtpmp2tdepay ! mpegtsdemux ! filesink
> location=videodstRDO.mpeg
>
>  when using gst-launch it works fine, but when I use a C application here
> is the error I get (with GST_DEBUG=3) :
> 0:00:00.032693078 12164 0x1912010 INFO GST_ELEMENT_PADS
> gstutils.c:1698:gst_element_link_pads_full: trying to link element
> tsdemux:(any) to element mpeg2dec:(any)
> 0:00:00.032735773 12164 0x1912010 INFO GST_ELEMENT_PADS
> gstelement.c:972:gst_element_get_static_pad: no such pad 'video_%04x' in
> element "tsdemux"
> 0:00:00.032759563 12164 0x1912010 INFO GST_ELEMENT_PADS
> gstutils.c:1216:gst_element_get_compatible_pad:<tsdemux> Could not find a
> compatible pad to link to mpeg2dec:sink
>
>  here is the code I wrote :
>
>  ...
> source = gst_element_factory_make ("udpsrc", "rtpsrc");
> rtpdepay = gst_element_factory_make ("rtpmp2tdepay", "rtpdepay");
> tsdemux = gst_element_factory_make ("mpegtsdemux", "tsdemux");
> sink = gst_element_factory_make ("filesink", "filesink");
>
>  g_object_set (source, "port", 5000, NULL);
> /* we need to set caps on the udpsrc for the RTP data */
> caps = gst_caps_from_string ("application/x-rtp, media=video,
> encoding-name=MP2T-ES");
> g_object_set (source, "caps", caps, NULL);
> gst_caps_unref (caps);
>
>  g_object_set (sink, "location", "/tmp/video.mpeg", NULL);
>
> /* build pipeline */
> gst_bin_add_many (GST_BIN (pipeline), source, rtpdepay, tsdemux, sink,
> NULL);
> if(!gst_element_link_many (source, rtpdepay, tsdemux, sink, NULL))
> {
>     g_printerr ("Could not link pipeline. \n");
>     return -1;
>  }
>
>  when I execute the application, the call to gst_element_link_many fails
> and the program exit with my error msg.
>
>  Do you know what might be wrong ?
>
>  thanks,
> Max
>
>
>  --
> Maxime Louvel
> web page : https://sites.google.com/site/mlouvel/
> linkedin : http://fr.linkedin.com/in/mlouvel
> address : 5400-B ridge oak drive
>                Austin, Texas, 78731
>                USA
>
>
>
> _______________________________________________
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>
>
>
> --
> --
> Emile Semmes
> Owner / Software Consultant
> e6 Group, LLC
> Office: (630) 376-0626www.e6group.com
>
>
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>
>


-- 
Maxime Louvel
web page : https://sites.google.com/site/mlouvel/
linkedin : http://fr.linkedin.com/in/mlouvel
address : 5400-B ridge oak drive
               Austin, Texas, 78731
               USA
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