NDI ScanConverter broadcasts your Mac's desktop or application windows over IP Video using the NDI protocol.

You can select to either show the entire screen, or just a single window of any application, which is alpha keyed to easily composite on your NDI equipped vision mixer, for example NewTek TriCaster with NDI support.

The NDI stream is very high quality, Selectable as 1280x720, 1920x1080 full HD or scaled to the window size, and runs at full frame rate for smooth display. You can also select a cropped Region of Interest portion of the screen to send over NDI.

Audio is also supported, including the option to loop your selected source to an output on the Mac. Visit the support site at for instructions on setting up your system sound to allow broadcasting of your computer's sound output (rather than a sound input device).

Note: Turn on the "Auto Refresh" checkbox to track window changes live - for example when taking an app fullscreen or starting a powerpoint presentation.

Also Supports Retina Display Macs.

What's New

Version 3.00

Updated to NDI v3.0, Improved Performance.

Ratings and Reviews

Does Not Open, Keeps Quiting


App was working well, it suddenly does not open, it quits when i try and open it.

Please help

Developer Response

Hi Kwabema - Please contact us for support using the email address at:
You may need to completely deinstall and reinstall the application.

App is great, and Sienna/Mark Gilbert very helpful


I am using two NewTek Tricasters…a 460 and a Mini HD 4SDI, and otherwise work exclusively with MacBooks, so need an NDI method of making my laptop screen images available as NDI sources in the Tricasters. This app is recommended by NewTek. When I first encountered a problem with sizing of my macbook screen images in the Tricasters, I contacted Mark Gilbert for support, and he was extremely helpful and patient. Problem is solved and macbook screen images working well in my Tricasters— thanks very much Mark and Sienna for your help and a great product.

Update just Crashes the App


I’ve been using NDI with our Tricaster for a long time now and recently, the application keeps crashing on start. I’m having to resort to the LITE version today for a live broadcast and hoping it doesn’t fail.

Developer Response

Hi Pandememnon.
Please contact us for support using the email address at:


Mark Gilbert
2 MB
Age Rating
Rated 4+
© Sienna


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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