Date: Sat, 21 Aug 2010 12:27:03 +0200
From: Robin Gareus <robin@xxxxxxxxxx>
Subject: Re: Multimedia Network Synchronization
To: linux-audio-user@xxxxxxxxxxxxxxxxxxxx
Message-ID: <4C6FA9F7.30004@xxxxxxxxxx>
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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