For anyone reviewing this thread, the next release of Isadora will allow texture based video (vid-gpu) to be sent to any stage. This should alleviate some of the issues with getting video where you want it. We're testing this release now and trying to get it out as soon as we can.

The matrox basically upscales the video and makes the video *think* its going to one output. What it really does is give you a huge 2560x1024 resolution. **Not** two 1920*1024 screens. So you have to use the settings as Mark said above as the computer will only see the Matrox as one big screen. In Isadora you have to basically chop the video in Half which Mark has cleverly coded to do. 

I don't believe this is related to the above thread.

If you are using a Dual Head 2 Go, and assuming the Dual Head 2 Go appears on display 2, the Preferences should be set like this

Stage 1: Place On = Display 2 - Left Half

Stage 2:  Place On = Display 2 - Right Half

Is this how you have the Preferences set?

In the new build, which are are very much hoping to have out at the end of April, we will provide an option to solve this problem. 

In the meantime, let me just say that you can make a gigantic preview stage -- whatever resolution you like -- and just move it to the bottom of the screen or somewhere out of the way. Even though you can't see the entire stage, it will still work to send the information to Syphon, etc.

Best Wishes,

Mark

I see what you mean.. it would be nice to have a syphon actor that can take any texture input (like Spout) and serve it for recapture. Perhaps this should be added as a Feature request.

I tried the syphon solution and is not so good in term of resolution and efficiency.

The problem is : the definition of syphon output is the definition of the real stage output.

To split the syphon input you have to output the double and find a place on your screen to display it.

So if you need 2 1920x1080 stage, you need 1 3840x1080 output… Where you put it on your screen?

When this is necessary (and depending on your hardware, and files sizes) you might gain in performance by having duplicate version of the file on your system, and located on separate physical drives. I recently helped a user trying to stream the same file multiple times (once for each stage), due to each player loading the full video, the system required more data transfer than the drive could provide.

By copying a file to another drive and splitting the data transfer between drives, (each player loading a separate copy of the file from different physical drives) these limitations were bypassed, and everything was able to play smoothly.