[gst-devel] I need help with RTP pipeline

[Charles, Daniel]

Hi,

 

I wrote an application as well.  I used a hash table, 

 

Guint32 pt = 96;

GHashTable *pt_map = g_hash_table_new_full (g_direct_hash,

 
g_direct_equal, NULL, (GDestroyNotify)gst_caps_unref);

 

then established the caps filter

 

caps = gst_caps_new_simple("application/x-rtp", "clock-rate",G_TYPE_INT,
90000, NULL);

 

insert  into the hash table 

 

g_hash_table_insert (pt_map, GINT_TO_POINTER(pt), (gpointer) caps);

 

then when connecting the rtpbin and the depayloader, link them with the
caps

 

That worked for me pretty well.

 

Regards,

 

Daniel.

 

________________________________

From: gstreamer-devel-bounces at lists.sourceforge.net
[mailto:gstreamer-devel-bounces at lists.sourceforge.net] On Behalf Of
Deeptendu Bikash
Sent: Wednesday, August 09, 2006 4:33 AM
To: gstreamer-devel at lists.sourceforge.net
Subject: Re: [gst-devel] I need help with RTP pipeline

 

I am trying to do the same thing by writing an application. For the
receiver, I am creating a udpsrc,  depayloader, decoder and videosink,
and linking them together. I am creating them like this:

depayloader = gst_element_factory_make("rtph263pdepay",
"testrtpplayer_depay");
decoder = gst_element_factory_make("ffdec_h263", "testrtpplayer_dec");

My question is, how do I set the caps of the rtph263pdepay sink pads to
accept "application/x-rtp, clock-rate=90000,pt=97"?

Thanks,
Deeptendu 




On 8/8/06, M M <mikel_m01 at yahoo.com> wrote:


Hi,
Thanks!!!, That solved the problem.

Regards,
Michael


Philippe Khalaf < burgerman at users.sourceforge.net
<mailto:burgerman at users.sourceforge.net> > wrote:

Hi,

Try this :

gst-launch udpsrc port=4000 ! application/x-rtp, clock-rate=90000,
pt=97 ! rtph263pdepay ! ffdec_h263 ! xvimagesink

Regards,
Philippe

M M wrote:
> Hi,
> Please I need help on RTP pipeline, I have this pipeline: 
> 
> Sender:
> gst-launch videotestsrc ! ffenc_h263p ! rtph263ppay ! udpsink
port=4000
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ... 
> New clock: GstSystemClock
> 
> Works fine!!! but the Receiver:
> 
> gst-launch udpsrc port=4000 ! rtph263pdepay ! ffdec_h263 ! xvimagesink
> OR even
> gst-launch udpsrc port=4000 ! rtph263pdepay ! fakesink
> 
> Setting pipeline to PAUSED ...
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> New clock: GstSystemClock 
> 
> ** (gst-launch-0.10:29039): CRITICAL **: gst_base_rtp_depayload_chain:
> assertion `filter->clock_rate > 0' failed
> ERROR: from element /pipeline0/udpsrc0: Internal data flow error.
> Additional debug info:
> gstbasesrc.c(1569): gst_base_src_loop (): /pipeline0/udpsrc0:
> streaming task paused, reason error (-5)
> Execution ended after 2564000 ns.
> Setting pipeline to PAUSED ... 
> Setting pipeline to READY ...
> Setting pipeline to NULL ...
> FREEING pipeline ...
> 
> I traced the error to gstrtph263pdepay.c and gstbasertpdepayload.c and
> tried to fix the clockrate, by commenting out checking the structure
(in 
> gstrtph263pdepay.c setcaps), that didn't work. This error
unfortunately
> exists in all the RTP depayloaders. Maybe I am doing something wrong!.
> Please help.
> 
> Regards,
> Michael
> 
>
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