UdpSrc: streaming stopped, reason not-negotiated (-4)

[Bruce Clay]

Although UDP is connectionless I don't think you can have two apps /
streams going to the same port.  The data needs to be multiplexed on the
source end then demultiplexed on the receiving end

On Thu, Aug 17, 2023 at 10:42 AM Jochen Jung via gstreamer-devel <
gstreamer-devel at lists.freedesktop.org> wrote:

> Hello gstreamer developers,
>
>
> I have a problem with the UdpSrc. My application is supposed to process
> live audio(i.e. PCMU) and dtmf(TELEPHONE-EVENT). Both are rtp messages sent
> to the same port.
>
> With debug enabled the UdpSrc posts a warning: streaming stopped, reason
> not-negotiated (-4).
>
> I have my pipeline converted from dot to pdf and attached to this mail.
>
> Is it even possible to use the UdpSrc this way, having caps of pcmu and
> telephone event?
> Is my general concept to process audio/dtmf correct?
>
> Any ideas are appreciated.
>
>
> Regards Jochen Jung
>
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