Problem : Client server streaming Using Gstreamer : rtspsrc

[deepak chaudhari]

Hello All ,

I am prototyping client server streaming using Gstreamer.
 Using gst-launch it works fine.

I am constructing same elements  in my code as follows :

/* create elements */
    pipeline = gst_pipeline_new ("mpeg--rtp-player");
   
   source = gst_element_factory_make ("rtspsrc", "rtsp-source");
  
  rtpdepay = gst_element_factory_make ("rtpmp4vdepay", "rtpmp4v-depay"); 
 
  decoder = gst_element_factory_make ("ffdec_mpeg4", "mpeg-decoder");

  sink = gst_element_factory_make ("xvimagesink", "video-output");

    if (!pipeline || !source || !rtpdepay || !decoder || !sink) {
        g_print ("\nOne element could not be created\n");
        return -1;
    }

    /* put all elements in a bin */
    gst_bin_add_many (GST_BIN (pipeline),source, rtpdepay, decoder, sink, NULL);

    gst_element_link (source,rtpdepay);
    gst_element_link_many (decoder, sink, NULL);

It is showing Internal data flow error,this error comes if we construct wrong pipeline, please help me out where I am doing mistake.
--
     Regards,
Deepak Chaudhari

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[Wim Taymans]

On Tue, 2009-06-02 at 15:31 +0530, deepak chaudhari wrote:

> Hello All ,
>
> I am prototyping client server streaming using Gstreamer.
>  Using gst-launch it works fine.
>
> I am constructing same elements  in my code as follows :
>
> /* create elements */
>     pipeline = gst_pipeline_new ("mpeg--rtp-player");
>    
>    source = gst_element_factory_make ("rtspsrc", "rtsp-source");
>    
>   rtpdepay = gst_element_factory_make ("rtpmp4vdepay",
> "rtpmp4v-depay");  
>  
>   decoder = gst_element_factory_make ("ffdec_mpeg4", "mpeg-decoder");
>
>   sink = gst_element_factory_make ("xvimagesink", "video-output");
>
>     if (!pipeline || !source || !rtpdepay || !decoder || !sink) {
>         g_print ("\nOne element could not be created\n");
>         return -1;
>     }
>
>     /* put all elements in a bin */
>     gst_bin_add_many (GST_BIN (pipeline),source, rtpdepay, decoder,
> sink, NULL);
>
>     gst_element_link (source,rtpdepay);
>     gst_element_link_many (decoder, sink, NULL);
>
> It is showing Internal data flow error,this error comes if we
> construct wrong pipeline, please help me out where I am doing
> mistake.

You can't link rtspsrc to the depayloader (if you check the result code,
you will see that you have an error). See gst-inspect rtspsrc you will
see that there are dynamic pads on rtspsrc. Read the manual about
dynamic pads to fix your problem.

Wim

> --
>      Regards,
> Deepak Chaudhari
> ------------------------------------------------------------------------------
> OpenSolaris 2009.06 is a cutting edge operating system for enterprises
> looking to deploy the next generation of Solaris that includes the latest
> innovations from Sun and the OpenSource community. Download a copy and
> enjoy capabilities such as Networking, Storage and Virtualization.
> Go to: http://p.sf.net/sfu/opensolaris-get
> _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

------------------------------------------------------------------------------
OpenSolaris 2009.06 is a cutting edge operating system for enterprises
looking to deploy the next generation of Solaris that includes the latest
innovations from Sun and the OpenSource community. Download a copy and
enjoy capabilities such as Networking, Storage and Virtualization.
Go to: http://p.sf.net/sfu/opensolaris-get
_______________________________________________
gstreamer-devel mailing list
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https://lists.sourceforge.net/lists/listinfo/gstreamer-devel