[LAU] Multimedia Network Synchronization

[Christoph Kuhr]

Am 21.08.2010 um 14:00 schrieb linux-audio-user-request at lists.linuxaudio.org 
:

> Date: Sat, 21 Aug 2010 12:27:03 +0200
> From: Robin Gareus <robin at gareus.org>
> Subject: Re: [LAU] Multimedia Network Synchronization
> To: linux-audio-user at lists.linuxaudio.org
> Message-ID: <4C6FA9F7.30004 at gareus.org>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On 08/20/2010 07:25 AM, Christoph Kuhr wrote:
>>
>> Hi there,
>>
>> Im looking for a way to synchronize puredata, vlc and ardour over  
>> ethernet.
>> Using ltc, mtc or smpte?
>> Which software?
>>
>> Any ideas?
>>
>> Ck
>
> Hi Christoph,
>
> What are you trying to accomplish?
> Do you need sample accurate sync, or does a synchronous start suffice?

Im doing a live performance, using vlc with webcams and lcd screens/ 
projector, pd objects for dsp and ardour for playbacks and miditracks.

Vlc usb cams shall be synced with pd audio.
The singer shall be shown over projector, means lips have to be synced  
to audio

>
> To sync-start, the pragmatic simple way is to just send an OSC message
> to all applications involved. ..or you can have a look at hdsync/ 
> ivysync
> on dyne.org.
>
> For accurate sync: Netjack (comes with JACK) allows to sync multiple
> machines (via ethernet) using JACK-transport.

If i go on netjack, which is already planned for ardour, would it work  
to send an audio sig to VLS, which syncs all video to the received  
audio?


>
> AFAIK VLC can only be started/stopped via remote-ctrl but does not
> provide for external sync. You could use xjadeo.sf.net for that.
>
> There's also a pd-external (externals/tb/jack_transport) that allows  
> to
> sync pd and ardour:
> http://lists.puredata.info/pipermail/pd-dev/2007-08/009275.html
>
> HTH,
> robin
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