[gst-devel] rtp transmit occur "not-negotiated (-4)" error

[Marco Ballesio]

Hi,

just one more note: please report your log to pastebin or as a .txt
attachment.. the gmail web interface is damn slow for long emails on my
eeepc (I know, I should use mutt, mea culpa).

Regards

On Wed, Nov 10, 2010 at 9:42 AM, Marco Ballesio <gibrovacco at gmail.com>wrote:

> Hi,
>
> On Wed, Nov 10, 2010 at 5:26 AM, guodecn <guo.dehua at zxelec.com> wrote:
>
>>
>> I have some troubles of rtp transmit of gstreamer. I test the rtp
>> transmit,
>> server and client are all in local host, so my example as below:
>> server:
>> gst-launch-0.10 -v videotestsrc ! x264enc ! rtph264pay ! udpsink
>> host=127.0.0.1 port=40000 sync=false
>>
>
> you don't need to set sync to false here. Btw it shouldn't harm that much.
>
>
>>
>> client:
>> gst-launch-0.10 -v udpsrc caps="
>>
>> application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H264,payload=(int)96,ssrc=(uint)237526004,clock-base=(uint)1584170994,seqnum-base=(uint)42626"
>> port=40000 ! rtph264depay ! decodebin ! xvimagesink
>>
>
> you must not specify ssrc, clock-base and seqnum-base in your caps. Unless
> you're playing back something captured with tcpdump, they're likely to
> change for each streaming session.
>
> It's easy to see this through wireshark.
>
>
>>
>> the client caps is copied from the server's udpsrc caps. But still occur
>> an
>> error, error message as below:
>>
>> ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal
>> data
>> flow error.
>> Additional debug info:
>> gstbasesrc.c(2550): gst_base_src_loop ():
>> /GstPipeline:pipeline0/GstUDPSrc:udpsrc0:
>> streaming task paused, reason not-negotiated (-4)
>>
>
> it's reasonable, as the receiving pipeline is expecting EXACTLY the same
> SSRC, clock-base and seqnum-base. Maybe you can set the verbosity of your
> pipeline to something like GST_DEBUG=3 to confirm.
>
> Regards
>
>
>> Execution ended after 623154883 ns.
>> Setting pipeline to PAUSED ...
>> Setting pipeline to READY ...
>>
>> I have test the rtp example in the tree of
>> gst-plugin-good/tests/example/rtp, occur the same error. I also have read
>> the document:
>>
>> http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/gst/rtp/README#n251
>> ,
>> and follow it , still occur the same error. Who can help me? Thanks very
>> much.
>> --
>> View this message in context:
>> http://gstreamer-devel.966125.n4.nabble.com/rtp-transmit-occur-not-negotiated-4-error-tp3035468p3035468.html
>> Sent from the GStreamer-devel mailing list archive at Nabble.com.
>>
>>
>> ------------------------------------------------------------------------------
>> The Next 800 Companies to Lead America's Growth: New Video Whitepaper
>> David G. Thomson, author of the best-selling book "Blueprint to a
>> Billion" shares his insights and actions to help propel your
>> business during the next growth cycle. Listen Now!
>> http://p.sf.net/sfu/SAP-dev2dev
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20101110/085875aa/attachment.htm>