Ravenna/AES67 protocol: before starting the journey...

[Roberto Grossi]

Thanks Sebastian for working the details to obtain Ravenna/AES67
compatibility.

AoIP has been constantly spreading out in these last two years; still, open
source code lacks, so it is good that gstreamer supplies it.

I will file the ptime issue in bugzilla.

As for the clock domain, this is what appears in the SDP info, but I agree,
the syntax is what you suggest below.

Cheers
-Roberto


On Mon, Dec 7, 2015 at 10:23 AM, Sebastian Dröge <sebastian at centricular.com>
wrote:

> On So, 2015-12-06 at 13:47 +0100, Roberto Grossi wrote:
>
> > a=clock-domain:PTPv2 0
>
> This is actually not RFC7273 compatible, it should look like this
> instead.
>
> a=ts-refclk:ptp=IEEE1588-2008:0
>
> I guess some fallback handling for Ravenna can easily be implemented
> here then once everything else is in place.
>
> > a=mediaclk:direct=0
>
> That's RFC7273 compatible.
>
> > a=ptime:1.4512471
> > a=maxptime:1.4512471
>
> These two would be added automatically by the payloader, i.e.
> rtpL24pay. However currently it does not add this and RFC3190 also does
> not mention it.
>
> Might be worth adding. Would you mind filing a bug at
>   https://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer
> about this?
>
> > In general, it would be nice also to let one specify:
> > RTP port number = even number (e.g. 5004)
> > RTCP port number = RTP port number + 1 (e.g. 5005)
> > TTL time-to-live (e.g. 1)
> > UDP port numbr (e.g. 8554)
>
> That's automatically handled by gst-rtsp-server and you can override
> these things with its API.
>
> --
> Sebastian Dröge, Centricular Ltd · http://www.centricular.com
>
>
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>
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