• Hi All,

    I created a scene using a screen capture alpha (zoom) into multiple projectors. I wanted to keep the look but add another projector (another zoom window) for a second scene, so I copied the first scene and added another projector. It looks fine. I can toggle between the scenes, but I can't get it to run in a fade. The stage goes black. I get this message "Failed to get duplicate output in cDuplicate manager with 0X80070057". Thoughts?

    Thanks,

    Ruth

  • Tech Staff

    @rhyamamoto

    There is a known bug in the current Screen Capture Alpha actor, that causes a crash if transitioning between scene which both contain the Screen Capture Alpha actor.

    It is recommended to load the Screen Capture Alpha actor into a background scene, and share its video with a Broadcast actor.
    I have a simple example here that loads a background scene and shares video static to the primary scenes. (replace the static with Screen Capture Alpha)


  • @rhyamamoto said:

    I created a scene using a screen capture alpha (zoom) into multiple projectors. I wanted to keep the look but add another projector (another zoom window) for a second scene, so I copied the first scene and added another projector. It looks fine.

    I believe the crash you found is solved in Screen Capture actor v0.9.8, which I've uploaded today.

    Here's another example patch using that uses the Screen Capture actor in the background scene.

    screen-capture-using-background-scene.izz

    which is now included with v0.9.8.

    However, @DusX is right that the background scene is the best practice. Why? Because when you have a Screen Capture actor in each scene, and you transition from Scene A to B, it will have to shut down the capture engine in Scene A and then start up a new capture engine in Scene B. This inefficiency isn't the end of the world, but as long as the settings of the two Screen Capture actors are the same, it would not be the best way to approach it.

    Best Wishes,
    Mark

  • Tech Staff

    I will add that I generally use background Scenes for any sort of live video or data source (Syphon, Spout, NDI, Screen Capture, Video In Watchers, OpenNI, OSC, etc.) so that I: 

    • Can always keep them active (and not have to worry about accidentally deactivating them when jumping between Scenes)
    • Never have to wait for them to initialize (which also avoids spikes in the LOAD and dips in the FPS in certain cases during Scene transitions)
    • Never have to worry about conflicts between two sources when transitioning between Scenes

  • @dusx Thank you. I temporarily solved my problem by using an envelope generator and trigger to make mini-scenes. I will look at your patch to make a background to see if I can figure it out.


    Cheers,

    Ruth