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Animator new to VJ, Halp!

Posted: Wed Feb 24, 2016 14:50
by Digi
Hey all I've been researching for over a month on Resolume and how things work in the field of VJing.
I've chosen Resolume since it looks like a polished professional package to start with. I've read about every page of the manual.

I think at this time it's probably good to start actively asking questions I can't find solid answers for. Please pardon my any dumb questions, since I'm still learning.

-BPM from DJ equipment to my Midi
I've picked up an Akai pro 32 which I've already learn to key map my midi and send a midi clock out of into Resolume with bpm sync on. My concern is can I reliably get a midi clock out of a dj's equipment when they are mixing with CDJ's or something into my midi which sends the clock to Resolume. I've read there could be issues with the bpm coming out of the DJ's equipment that is not the correct bpm. I do not own or personally know anyone with DJ equipment I can use for research which is why I ask.

-Working with live DJ's
My second question is if the DJ is playing live, how do I know what song they are going to play next. I've searched a lot and don't have a clear answer.But because DJ's prefer to play live I kinda have no clue what they might play next even if I had visuals ready for them before the event.
I'd prefer to have visuals ready and their equipment triggers it using OSC or Midi but if they are using CDJ/MDJ's is it even possible to map specific tracks to Resolume with that hardware?

-Displays
Lastly I might have up to 9 1080P displays for a future event. 4 of them which might be projectors that are image stitched to make a larger image using Arena. Can I get away with a laptop with just 2 video ports (HDMI / Display port) using HDMI splitters? The laptop is windows 8.1, 860M gtx 4gigs Vram, 16gigs of ram, SSD, i7 4710HQ cpu with turbo 3.5ghz. Or do I need to modify one of my desktops to run 2 video cards with 4 outputs just to have enough to run the displays??

I think these are my biggest concerns at the moment so that's why I'm coming to you guys since I can't get a clear answer..

Re: Animator new to VJ, Halp!

Posted: Wed Feb 24, 2016 16:58
by Oaktown
-Displays
Lastly I might have up to 9 1080P displays for a future event. 4 of them which might be projectors that are image stitched to make a larger image using Arena. Can I get away with a laptop with just 2 video ports (HDMI / Display port) using HDMI splitters? The laptop is windows 8.1, 860M gtx 4gigs Vram, 16gigs of ram, SSD, i7 4710HQ cpu with turbo 3.5ghz. Or do I need to modify one of my desktops to run 2 video cards with 4 outputs just to have enough to run the displays??
I'm afraid that running 9 1980P displays from your two DP video porst is not going to be possible! You could run 8 HD monitors at 30HZ using 2 Dual-Link DP to DVI adapters and 2 Datapath X4. All that gear would cost about $3,500

You could do up to 18 720P displays if use 2 Dual-Link DP to DVI adapters, 2 Datapath DL8 and 6 Datapath X4. All that gear would cost about $12,500.

You could do up to 32 XGA displays if you use 2 Dual-Link DP to DVI adapters, 2 Datapath DL8 and 8 Datapath X4. All that gear would cost about $15,500.

I believe that Datapath will be releasing a DisplayPort X4 in the very near future with pass through DP video port which would mean that you woudn't have to invest in the Dl8 units.

Re: Animator new to VJ, Halp!

Posted: Wed Feb 24, 2016 22:49
by Digi
Uh is there any reason why HDMI and DP can use an adapter to DVI? I don't see the cost being as high.
5 of the displays are showing the same image so I'm not sure why I'd need a data path and not a powered splitter unless resolume has a problem with that.

For the projectors I can see a data path being used. When I say 4 projectors I mean 2 are stitching a image and 2 are stitching the same image on the other side of the room. Not 4 projectors are displaying a unique output. So I can see me needing 1 data path x2, not x4 to control both unique images and then a a splitter for both projectors.

However when I google I only see data path offering a pci card for x2.. Kinda pointless to spend $1500 when I don't need that just yet for x4.

Unless I'm missing something or not explaining right that should cost me a maximum of $2000. ><

Also it almost sounds cheaper to buy a new motherboard for my mid tower and run 2 of my GTX cards in it for the cost of 1 data path lol.

Re: Animator new to VJ, Halp!

Posted: Wed Feb 24, 2016 23:40
by Oaktown
5 of the displays are showing the same image so I'm not sure why I'd need a data path and not a powered splitter unless resolume has a problem with that.
You didn't mention that in your original post so it's a totally different scenario!

It may sound counterintuitive but I would still recommend only using one GPU. So I would do an HDMI splitter for the 5 identical 1080P displays, one Datapath X4 for the other 4 1080P displays and run your UI from one of the DP outputs with an adapter.


If you GTX card has a DL DVI output (which I'm pretty sure it does!) then connect the X4 to that output with a 3840x2160@30Hz signal which you will split in 4 1920x1080 quarters that you can retime to 60Hz.

Just make sure you get a good HDMI distro such as this Gefen unit

You'd be right around $2,000 but you'd have a pretty rock solid system!

My $0.02 :)

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 00:38
by Digi
Ahhhh I can't quote because of the URL ><

Yeah I see what you mean and my apologies! My laptop has only a HDMI out and a Display port that are unique outputs. ><
It doesn't have any DVI out. My alternative is to run a tower that has a 760GTX with a DVI-D, DVI-I, HDMI and a display port. I do actually have 2 of these cards in a SLI build.

I could buy a new motherboard and i3 for one of my smaller machines and run both of those cards in it (not in SLI) for all the ports. It will just be an adapter fest but it might actually be cheaper then a Data path. ><

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 00:53
by Oaktown
Trust me, the Datapath X4 is such an awesome piece of hardware, the moment you test it out, you'll wonder how you were able to survive without it ;)

And to be clear, I don't get any kickbacks from them, I just use the X4 all the time and it's simplified my workflow for larger installations so much that I swear by it!

Even if you have two cards I would still only use one with Resolume. I personally never use more than 1 GPU and sometimes I design installations with large numbers of outputs.

You could use your HDMI output to the distro and DP output from your laptop with a DisplayPort to Dual-link DVI converter to the X4. Also, if your two GPU in your desktop rig are in SLI, then the outputs of the slave GPU are disabled.

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 06:59
by Digi
Oh right yeah the master gpu will do all the rendering. I'd just use the slave card not in sli for unique video outs if I used one of my towers. I'm not even sure resolume can use SLI. >< Reguardless I've done the Resolume benchmark on all my machines in single card configuration and do 20 layers @ 1080p @ over 60fps. Accept for my laptop which starts to hit 35fps around 20 1080p layers.

I do like the idea of a data path but I just have to make some choices is it worth the cost if I'm not doing this every month vs running 2x 760 gtx's with 4 video outs in total each. Over all I did learn the power of a data path from you which I'm grateful for!

Now I just need to ensure I can at least get a solid midi clock out of the MDJ to my Akai 32.. Currently I don't have any MDJ's I can test with. ><

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 10:45
by Joris
When I say 4 projectors I mean 2 are stitching a image and 2 are stitching the same image on the other side of the room. Not 4 projectors are displaying a unique output. So I can see me needing 1 data path x2, not x4
Please put me in touch with the projectionist that can align 2 sets of 2 projectors so perfectly, that you can use the exact same perspective correction and exact same blending on each set. I would like to marry him ;)

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 13:16
by He2neg
Joris wrote:
When I say 4 projectors I mean 2 are stitching a image and 2 are stitching the same image on the other side of the room. Not 4 projectors are displaying a unique output. So I can see me needing 1 data path x2, not x4
Please put me in touch with the projectionist that can align 2 sets of 2 projectors so perfectly, that you can use the exact same perspective correction and exact same blending on each set. I would like to marry him ;)
When the Projector itselfe have some warping ( Panasonik 21k) then you can do it.

Re: Animator new to VJ, Halp!

Posted: Thu Feb 25, 2016 15:09
by Joris
So, He2neg, are you in a relationship? Happy? Looking to try something new?