just:play is an automated 24/7 Master Control Playout solution with SD, HD, and UHD format support, seamlessly integrating live feeds and routers as well as GPI events and static or realtime graphics.


Secure and Redundant 24/7 Playout

Manage your 24/7 Master Control Playout in realtime with an unlimited number of clients working on the same channel, and industry-standard redundancy and failover support.

Schedule Your Way

Schedule content weeks in advance with a user-friendly timeline, the traditional list view (with metadata support), and a convenient calendar function.

NDI®, SRT, UDP and ST-2110 Support

Native SD/HD and UHDp60 SDI, NDI® (SRT, UDP, ST-2110 to follow in an upcoming v.5 point release) playout of video and multiple layers of static or realtime graphics, using qualified hardware from Apple (Apple silicon preferred), AJA, and Blackmagic Design.

Industry/Regulatory Compliance

Major broadcast container and codec support. Import of playlists using CSV and XML formats. Support for CEA-608/708, OP-47, EAS, and LTC reference timecode.

Smart User Interface

The smart graphical user interface, embedded into our universal Just Control application, provides an unlimited and frame-accurate review and preview of all scheduled video items.

Always in Control

just:play enables the operators to have full control of the rundown during the scheduling process and to execute repeating events scheduling using time-based Rules.

Mind the Gap

Gaps, Overlays, and Placeholders are easily visible and can be edited right away. just:play’s playlist-based design makes it easy to structure the rundown.

Switch to Live

High-quality video, audio, and realtime graphics playout with the ability to switch to live using a single SDI video device or NDI® (SRT, UDP, ST-2110 to follow in an upcoming v.5 point release) IP sources.

Static and Realtime Graphics

From a simple Station ID or Live Bug to interactive realtime graphics with multiple layers and external third-party data support for news tickers, stock exchange, weather forecast, and more.

Extended Events Support

Support for HTTP events to include GET/POST methods and for frame-accurate SCTE-104 Splice Events. New “Rules” method to trigger an unlimited number of sequential events to be executed based on time (per day, hour, minute, or second) so that there is no need to schedule repeating events in the timeline anymore.

Solution Video Gallery

Please click on the Link to access the video(s) on YouTube directly.

Compatibility Matrix

System Requirements

  • Qualified Mac mini (Intel/Apple silicon), Mac Studio (Max or Ultra), or Mac Pro 2019/2023 (Intel/Apple silicon) – please check the online user manual. Apple silicon is recommended.
  • Version 5.x Apple macOS Monterey (12.7.x), macOS Ventura (13.6.x), macOS Sonoma (14.3.x).
  • Version 4.2: Apple macOS Big Sur (11.7.x), macOS Monterey (12.7.x), macOS Ventura (13.6.x).
  • Version 2.8: Apple macOS Mojave (10.14.6).
  • Minimum of 16 GB RAM (Apple silicon), 12 GB RAM (Intel).
  • Support for AJA and Blackmagic Design video devices (Intel/Apple silicon).
  • For detailed system requirements please consult the online user manual or contact us

Supported Codecs & Containers

Supported Codecs

  • DV-PAL
  • DV/DVCPRO-NTSC
  • DVCPRO, DVCPRO50, DVCPRO HD
  • HDV
  • All Apple ProRes Codecs
  • HEVC (H.265)
  • XDCAM EX / HD / HD422
  • MPEG-2 , MPEG-4, H.264
  • MPEG IMX (30/40/50)
  • AVC-Intra
  • XAVC
  • Avid DNxHD®/Avid DNxHR® (decoder)
  • JPEG
  • Apple Animation Codec

Supported Containers

  • MOV, MP4, M4V
  • MPG, MPEG
  • MXF

Supported Frame Rates

  • 25, 29.97, 30, 50, 59.94, 60.
  • Supported frame rates are container and codec specific. Codec support depending on installed Apple Pro Codecs.

Free Download / Infos

  • You are welcome to download a trial version of our latest just:play v.5.1.0 GM 1254 release, by clicking on the “Download” button below. The trial version of just:play is fully feature-enabled, but will apply a watermark on the outgoing SDI/NDI® output at a given interval. To run a watermark-free version of just:play, please contact our sales department at moc.rianosloot@selas or an authorised ToolsOnAir reseller to purchase a licence.
  • Please note that you will need a new Activation Key, when upgrading from just:play v.4.x or older.
  • We strongly recommend all customers using MacMini6,x and MacMini7,x to update to a new Apple silicon-based Mac mini (Macmini9,1 (M1), Mac14,3 (M2) Mac14,12 (M2 Pro)). Please refer to Supported Mac Models and macOS Versions v.5.x below for more information.
  • There are new version 5.x documents available, and we recommend all new, as well as all existing customers updating from a previous version, to consult the new manuals.
  • We ask all users updating from a previous version to follow our update guide which can be found here.

Further Documentation: