Mix two asynchronous audio sources

[Mailing List SVR]

Il 07/10/2016 12:23, paul.goulpie ha scritto:
> Hello, I try to create a pipeline that contains two audio sources are mixed
> on a single audio output.
> I realized this with the adder module.
> Nominal way everything works fine:
>
> gst-launch-1.0 \
> audiotestsrc name='src1' ! adder0. \
> udpsrc  name='src2' caps="application/x-rtp,payload=11,clock-rate=44100"
> port=4446 ! rtpL16depay ! audioconvert ! adder0. \
> adder ! autoaudiosink
>
> My problem occurs when the udp source (src2) stop its spread. This causes me
> a complete shutdown of all the pipeline.
> Is there a way around this blockage: continue the distribution of the source
> when the source udp (src2) stops its distribution and resume mixing the two
> sources when the udp source (src2) resumed broadcasting.

you can try interaudiosink/src, somethink like:

udpsrc ! interaudiosink

interaudiosrc ! rtpL16depay

when udpsrc error out you should get silence and you can try to restart 
the first pipeline periodically,

You could use a similar approach with appsink/src too but in this case 
you have to push silence buffers yourself,

Nicola

>
> Thank you for your response.
>
>
>
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