openPlayer

openPlayer are free software and hardware products for media installations developed and used at the Kunsthochschule Kassel. Of course, they are available to everyone, and everyone is invited to improve these products.

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openMacPlayer

📥 Download Mac App (ZIP)

Native 2-Channel or 3-Channel Synchronized Video Installation Player for macOS with autostart function

A minimalist tool for synchronous two- or three-channel video installations with an autostart function.

Spacebar = Toggle Fullscreen and Edit

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First Launch (macOS Security Approval)

Important

Since this is DIY software, macOS will block the initial launch.

1. Open the app with a double-click. The familiar warning window stating that the developer cannot be verified will appear. Simply close this window with Cancel or Done.
2. Click the Apple logo () in the top left corner and open System Settings.
3. In the left sidebar, click on Privacy & Security.
4. Grant permission: On the right side, scroll all the way down to the Security section.
5. A new, temporary notice will appear there:

   “"DualStreamPlayer" was blocked from use because it is not from an identified developer.”
   Right next to it, click the Open Anyway button, enter your Mac password, and confirm.

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Step-by-Step Instructions

1. Connect Displays & Launch

   • Connect both projectors/monitors to the Mac and launch the app. Three small black workspace windows will open automatically:
     • Channel 1: Central Clock Generator (Master)
     • Channel 2: Follows clock generator (Client 1)
     • Channel 3: Follows clock generator (Client 2)

2. Arrange Windows

   • Use the top title bar of the windows to drag them using the mouse to the desired connected monitors or projectors.

3. Load Media

   • Click the Load Video button in the respective windows and select the corresponding video file for each channel.

4. Arm Installation (Fullscreen)

   • Once the windows are positioned on the correct projectors, press the SPACEBAR.

5. Autosave & Autostart

   • Settings remain automatically saved after quitting openMacPlayer.
   • There is no save button.
   • On the next launch, the videos will start playing automatically after 5 seconds.