Comments on: Tutorial: Send Video Between Two Macs, with DV Over Firewire

By: DJRonSlomowicz

DJRonSlomowicz — Fri, 21 Aug 2009 17:30:47 +0000

I got this working and its awesome. I am sending from Virtual DJ/Cue on one laptop to GrandVJ on the 2nd laptop.

Is there anyway to do a sort of Video Rewire where the Mac sees the Quartz Compose Live DV as a monitor? Add it as an actual display?
With that – I could send the output of Virtual DJ directly to the output and then directly out.

Right now I have three windows open on the desktop – the VDJ control window, the VDJ output window, which is then captured and plays in the Quartz composer window. Even with 480×640 res – there is not enough real estate.. and having three displays of motion video going at once is eating up CPU Resources (I am running a 2.5Ghz MB Pro with 4GB memory.)

Any ideas?

By: vade

vade — Mon, 10 Aug 2009 13:53:08 +0000

Cool, thats similar, but its nice to be able to pipe it into the app of your choice.

By: Odin/Velmont

Odin/Velmont — Sun, 09 Aug 2009 08:57:00 +0000

Ah, and using Dirac Pro for transport (instead of DV) would be a boon. Especially if you put one of those nifty hardware-decoder cards into the mix.

By: Odin/Velmont

Odin/Velmont — Sun, 09 Aug 2009 08:54:13 +0000

We've had this in Linux for a long time. It's called DVswitch.

It's a $0 video switcher. Great!

I've used it with two computer inputs, and three cameras. That makes for switching 5 sources.

By: vade

vade — Fri, 31 Jul 2009 07:29:11 +0000

Well, 10.4 cant load QC plugins, so this will be 10.5, 10.6 only

By: Udart

Udart — Fri, 31 Jul 2009 07:18:31 +0000

@vade – I suppose you figured it out yourself – but did you look in the Firewire SDK download to see if there is anything in the documentation or examples about how to do the VirtualDV trick? Anyway it's not worse than just asking people to run the VirtualDV app – it works on Tiger too.

By: vade

vade — Fri, 31 Jul 2009 03:51:12 +0000

Im looking into allow DVCPro, DVCProHD output. No promises, no guarantees, no money back.. . Uncompressed HD is out of the question, no bandwidth. Uncompressed SD is possible in theory, AJA does it with their IO line, but frankly, my R&D budget is $0

By: nat

nat — Fri, 31 Jul 2009 03:22:48 +0000

or redcode RAW haha. I think the firewire 400 is too slow…

By: Will

Will — Fri, 31 Jul 2009 03:11:56 +0000

What are the odds of being able to do some sort of HD capture this way?

By: tom

tom — Fri, 31 Jul 2009 01:25:33 +0000

hey vade,
it would be great to have a tool which only streams the second ouput via firewire.
choosable resolution for the firewire output would be great. (DV PAL/NTSC, HD etc ..)