mix two audio streams

[Vivia Nikolaidou]

Hi,

First you can try writing into a file instead of alsasink. Does that
work? If so, there's your problem.

Can you play an audiotestsrc ! alsasink ?

If that still doesn't work, even when you try writing into a file, try
removing the audiomixer and playing back the two streams one by one.
If that works, something goes wrong with the mixing. Then you can try
two audiotestsources that go into an audiomixer, or an audiomixer with
only one input, etc.

Anyway, you can try debugging it bit by bit like this, trying out
small parts of the pipeline and figuring out what the problem is.

Let us know how it goes.

Best regards,

Vivia

On 9 August 2017 at 15:54, Farzan Shojaee <shojaee at partodadeh.com> wrote:
> Hi all,
>
>
>
> I want to receive two audio streams from two different ports (5001 and
> 5002), then mix them and playback. I used the following command in windows,
> and it worked correctly :
>
>
>
> gst-launch-1.0.exe -v audiomixer name=mix mix. ! audioconvert !
> audioresample ! autoaudiosink udpsrc port=5001 caps="application/x-rtp" !
> queue ! rtppcmudepay ! mulawdec ! mix. udpsrc port=5002
> caps="application/x-rtp" ! queue ! rtppcmudepay ! mulawdec ! mix.
>
>
>
> But when I want to test it on a linux based system running angstrom yocto,
> it doesn't work. No sound heard while there are incoming audio streams. the
> following command is used :
>
>
>
> gst-launch-1.0 -v audiomixer name=mix mix. ! audioconvert ! audioresample !
> alsasink device=hw:0,0  udpsrc port=5001 caps="application/x-rtp" ! queue !
> rtppcmudepay ! mulawdec ! mix. udpsrc port=5002 caps="application/x-rtp" !
> queue ! rtppcmudepay ! mulawdec ! mix.
>
>
>
> Has anybody and idea to solve it.
>
>
>
> Thanks.
>
>
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