vlc + gstreamer to read aes67 from dante

[GStreamer-devel mailing list]

Hello :)
I have a Dante AXc card in a toolbox, generating many AES67 streams
At the moment, I get these streams with aes67 tools from sound4 => it's ok

But, I need also to get these streams in a ubuntu machine.
Then, I installed gstreamer tools.
I created sdp file to  link to 1 aes67 stream.
But when I run the sdp file in vlc, it can't connect and read the stream.

here is my sdp file :
v=0
o=Node 1 1 IN IP4 169.254.86.105
s=DoleFM
t=0 0
a=type:multicast
c=IN IP4 239.69.90.124
m=audio 5004 RTP/AVP 96
a=rtpmap:96 L2/48000/2


Is there anything I forgot?

My goal is to be able to listen any of my different aes67 streams in vlc

Many thanks :)





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[GStreamer-devel mailing list]

On Tue, 2021-04-20 at 09:28 -0500, macfplus via gstreamer-devel wrote:

> Hello :)
> I have a Dante AXc card in a toolbox, generating many AES67 streams
> At the moment, I get these streams with aes67 tools from sound4 =>
> it's ok
>
> But, I need also to get these streams in a ubuntu machine.
> Then, I installed gstreamer tools.
> I created sdp file to  link to 1 aes67 stream.
> But when I run the sdp file in vlc, it can't connect and read the
> stream.
>
> here is my sdp file :
> v=0
> o=Node 1 1 IN IP4 169.254.86.105
> s=DoleFM
> t=0 0
> a=type:multicast
> c=IN IP4 239.69.90.124
> m=audio 5004 RTP/AVP 96
> a=rtpmap:96 L2/48000/2
>
>
> Is there anything I forgot?

AES67/Dante/Ravenna usually also contain information about packet sizes
and most importantly clock synchronization (according to RFC7273) in
the SDP. Check the relevant specs :)

I don't think VLC supports any of that.

Also you probably mean L24 there instead of L2.


How is this related to GStreamer though?

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Sebastian Dröge, Centricular Ltd · https://www.centricular.com


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[GStreamer-devel mailing list]

I must have misunderstood the Gstreamer job, then...

I thought Gstreamer would be able to catch my aes67 stream, thanks to sdp
file, and then would emulate the aes67 stream to an  "audio device like" for
vlc ?

I'm a newb about it, sorry :) but thanks for your help :) :)



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On Wed, 2021-04-21 at 03:48 -0500, macfplus via gstreamer-devel wrote:
> I must have misunderstood the Gstreamer job, then...
>
> I thought Gstreamer would be able to catch my aes67 stream, thanks to
> sdp file, and then would emulate the aes67 stream to an  "audio
> device like" for vlc ?

GStreamer supports AES67 (or at least the parts that are in scope for
GStreamer) and you can use GStreamer to build AES67 capture/sender
applications.

But that won't help you with VLC because VLC doesn't use GStreamer :)

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[GStreamer-devel mailing list]

ok.
Actually, I wanted to use vlc to "verify" the fact I could catch and listen
the aes67 stream on the machine.
Final goal is to catch it with a work tool.
 would I have to install a player like clementine ?
Or do I lost my time because of the fact The aes67 streams are created by
Dante product?

Many thanks




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