How to display video streamed from UDP source?

[Jim Norton]

Hi Chuck,

Thank you for the information. Is it possible to connect a udpsrc to  
playbin2 or a way to specify the URI property of playbin2 to read from  
a UDP broadcast?

Thanks again,
Jim



> Look at this example:
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-helloworld.html#section-helloworld
>
> Change the filesrc to udpsrc. Use gst-inspect udpsrc to find the needed
> properties. You should also reference this link:
>
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/faq/html/chapter-troubleshooting.html
>
> You can also use export GST_DEBUG=aaa:<dbg level> where aaa is a plugin
> name such as udpsrc. dbg level ranges from 1 to 5 or so, 5 being very
> verbose.
>
>
> On Tue, May 7, 2013 at 4:42 PM, Jim Norton <jimnorton at jimnorton.org> wrote:
>
>> I have a small program that uses the GStreamer library to play videos from
>> local files and videos on webservers using HTTP.
>>
>> How does one go about connecting to and playing a UDP video broadcast in C
>> using GStreamer?
>>
>>
>> For example, what is required to play the streaming video at this
>> hypothetical URI? 10.0.11.255:9001
>>
>> I have to be able to play a streaming video that is created using the
>> following sample VLC command:
>>
>> cvlc -vvv /vlc/attract.mpg :norm=ntsc :v4l2-width=320 :v4l2-height=240
>> :v4l2-standard=45056 :channel=1 --no-sout-audio --sout
>> '#transcode{vb="1600",vcodec=**mpgv,acodec=mpga,venc=ffmpeg}:**
>> standard{access=udp,mux=ts,**dst=10.0.11.255:9001}' --loop --ttl 1
>>
>>
>> I tried:
>>
>> // using playbin2 connect to UDP broadcast
>> g_object_set (data.playbin2, "uri", "udp://10.0.11.255:9001", NULL);
>>
>> Then I try to start the stream with the following:
>>
>> /* Start playing */
>>     if( gst_element_set_state (data.playbin2, GST_STATE_PLAYING) ==
>> GST_STATE_CHANGE_FAILURE )
>>     {
>>         g_printerr ("Unable to set the pipeline to the playing state.\n");
>>         gst_object_unref (data.playbin2);
>>         return( -1 );
>>     }
>>
>> and I get the failure to change state message.
>>
>> After some more googling, I found out about udpsrc. However, I can't
>> figure out how to use it in C code. I've gone through the tutorials, but
>> have not found any examples showing how to play a video streaming via VLC
>> from a UDP port.
>>
>> Any and all help would be greatly appreciated.
>>