Hi,
Yes, I've been using the opus codec and it works very well.
Dennis, to answer your question - it's used at one installation to transmit
the main studio audio to a remote FM transmitter. The latency is slightly
less than one second (hence my interest). I would normally use uncompressed
RTP audio but the private link between the sites isn't always 100% and opus
gives us extra resilience (and reduced bandwidth). The studio runs output.
harbor, with the transmitter site pulling the audio. There's lots of other
options here but, for the moment, what we have works very well.
I also use it for remote programming into the studio. This uses
input.harborat the studio. Latency, again, is around one second and
it's very reliable
(even though we're using domestic internet connections at both ends). I mix
the remote and local sources and it can seamlessly switch between remote
and local material (news local, programming remote, etc.).
Another, but similar, application is remote receive sites for outside
broadcasts. VHF OB receiver at a remote site, pushing the audio back to the
studio. Using 3G or public access wifi points is hopeless for reliable OBs,
hence the use of good old analogue solutions.
Switching is normally priority based - with the OB site being scheduled to
bring the remote connection up (currently via a cronjob but plan to tie in
with playout system and schedule).
All the webstreams are also fed and transcoded using liquidsoap.
Hope that gives you a bit of insight.
Steve.
On 17 December 2013 13:09, Dennis Heerema <[email protected]> wrote:
> Hi Steve,
>
> As a broadcast engineer i'm intrested in how you set this up!
> Especially how you maintain the locations and connections (telnet
> possible?)?
> Could you give me a look in your kitchen?
> I love creativity like this!
>
> Kind regards,
>
> Dennis
>
> -----Original Message-----
> From: Rivendell Steve <[email protected]>
> To: [email protected]
> Date: Tue, 17 Dec 2013 12:31:46 +0000
> Subject: Re: [Savonet-users] Liquidsoap + JACK latency
>
> Hello,
>
> I would find the ability to have lower latency useful.
>
> I use liquidsoap to shift broadcast audio around between different
> locations. This works very well but a reduction in latency would be useful
> - the remote feed sometimes needs to hold a conversation with the studio
> and the delay can cause issues.
>
> Cheers,
>
> Steve.
>
>
> On 17 December 2013 10:51, Daniel James <
> [email protected]>wrote:
>
>> Hi adiblol,
>>
>> > I thought of using Liquidsoap in kind of studio. For example, when I use
>> > OSC to switch from speech (JACK input) to music (playlist or request)
>> > there should be minimal latency to avoid silence.
>>
>> I would suggest giving it a try and auditioning whether this delay is
>> actually noticeable to your audience.
>>
>> With Airtime we found a bigger issue was leading and trailing silence on
>> the music files. By setting cue in and cue out points with Silan, we got
>> a much tighter-sounding output.
>>
>> Cheers!
>>
>> Daniel
>>
>>
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>
>
>
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