3 video's to 3 screens, using matrox triplehead2go?

Jun 4, 2011 at 3:10pm

3 video's to 3 screens, using matrox triplehead2go?

Hi,

I’m a first time user and I want to know how to get max/ jitter sending my 3 different video’s tot 3 different screens.

I’ve read a lot about matrox triplehead2go, so I think I will buy it.

Most of the topics are about splitting 1 video in the 3 parts, but that’s not what I need. I also read something about slicing but I can’t figure it out.

Can someone help me with this, perhaps with a basic patchfile?

#57442
Jun 6, 2011 at 1:24am

http://www.aranarproductions.com/enable_files/Multi_Channel_Cinema.zip

This is an app I wrote a while back which does this, based on Vades optimization patches.

I’ve also posted the Patch to this previous on this forum.

#205834
Jun 7, 2011 at 3:04pm

Thanx for your app. I got 1 major question: how do I get the 3 images to the three seperate screens?
Do I need to tell MAX that I want to send it to the Matrox TripleHead?

#205835
Jun 7, 2011 at 5:25pm

If they are set up as extended desktop, just drag the windows to the screen you want and hit escape.

Here’s the original patch:

– Pasted Max Patch, click to expand. –

You can add the pos or rect message to the windows so they load to the monitors you’ve assigned.

#205836
Jun 8, 2011 at 9:17pm

Thanx for the patch, the sync part is very usefull!

But I’m still doing something wrong I guess….I installed the Triplehead now, so I dragged the windows to the different screens, but when I put on the fullscreen it turns in to one screen (splitscreen over 3 monitors), and not 3 seperate fullscreens… Is there a way to de-activated the splitscreenfunction of the Triplehead?

#205837
Jun 8, 2011 at 9:55pm

I’m afraid I don’t understand. I don’t have a lot of experience with the Matrox products, but when I have used them I didn’t notice a problem (I suppose not with this specific patch though).

Maybe a screen shot of your Displays control panel would be helpful? Do you have to install any additional software?

#205838
Jun 9, 2011 at 8:02am

I added all the matrox settingscreens. I tried other patches also, but they have the same problem…
I can’t move the MAX-screens with the shortcurt either.
The only software I needed to install was Matrox Powerdesk.

#205839
Jun 12, 2011 at 9:29pm

The th2g shows itself as one screen to the computer and then splits the output in the box. So what you have to do is set up you jit.window objects all with ‘size 1024 768′ and ‘border 0′, and individually with ‘pos 0 0′, ‘pos 1024 0′, ‘pos 2048 0′ (e.g. for 3 x 1024×768 screens) so that they’re effectively taking up the right area of each screen.

Hope that helps – I’ve never actually used one so I’m going from what I’ve understood when I looked into it before.

DiGiTaLFX

#205840
Nov 27, 2012 at 10:35am

I have now tried DiGiTaLFX’s suggestion – though it did not work, as the screens are not positioning correctly and when removing the borders, the picture does not fit to the screen size anymore (Triplehead’s long screen).. which is not too handy.

Does anyone have other suggestions for the 3 videos to 3 screens Triplehead setup…?

- edit

#205841
Nov 27, 2012 at 3:35pm

Not sure what you’re doing wrong but digitalfx’s method should work. Anyway, I always use the alternative method below.

That ‘s to have 1 window span all 3 outputs, so 2400×600 for 3x800x600 and so on, and position it at 1024×0 if you have a 1024×768 primary screen. If you’re playing your video through matrices (ie. not openGL) you combine the 3 800×600 matrices into one 2400×600 matrix (using ‘usedstdim’ etc) and send that matrix to the window. If you ‘re using openGL rendering then make 3 videoplanes and position them horizontally so they fill the full window one next to the other, with ‘scale 1.333 1 1′ attribute as well. I always forget what the correct ‘pos x 0 0′ values for the videoplanes are but that’s easily found by moving ‘m around a bit.

#205842
Nov 28, 2012 at 4:42pm

thanks for reply, dtr – i ended up with taking advantage of the patch you posted here on the forum… with the keystone corrections.
functions nicely!
i just had to play with the position for the big triplehead jit.window. i am using a retina (2888×1800) and the pos now is set to 1441 – which works okay..
the size of my big triplehead screen is 3 x 1280 x 800.
not quite sure if i do things in the right way with the pos – but it works (almost) fully precise in practice…

#205843
Nov 28, 2012 at 4:45pm

get the pos’s right and it should be pixel accurate.

#205844
Nov 28, 2012 at 6:01pm

if you mean that i should set the pos for the big triplehead window to ‘pos 2880 0′ (following the retina display settings) – it didn’t work.

#205845
Nov 28, 2012 at 11:13pm

I meant getting ‘m right in general, also the videoplane pos, not pointing to anything specific. Don’t have experience with retina displays.

#205846
Nov 30, 2012 at 9:11am

ok – yes, i think, i got them now

#205847

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