Re: [gst-embedded] [gst-devel] Problem : Client server streaming Using Gstreamer : rtspsrc

[Wim T. <wim...@gm...>]

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
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