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With version 5.0, NDI based Playout is possible, and with version 5.5 we support SRT and UDP Playout using qualified Apple hardware. Please consider the following points when configuring a machine for streaming playout:

  • NDI will work well on INTEL-based Macs. For SRT and UDP Playout, an Apple silicon-based Mac mini (M1/M2), Mac Studio (Max or Ultra) or Mac Pro 2023 (Mac14,8) is highly recommended.

  • The faster the Mac, the more functions and a higher video codec quality can be used at the same time.

  • Although it is possible to run Just Out and Just Control on the same machine, we strongly recommend running Just Control on a separate machine.

  • Realtime graphics are supported, but especially complex templates must be tested thoroughly before using them on air.

Notes

  • The delay depends mainly on the buffer settings defined in our engine and the “application” which receives the stream.

  • In case the ability to receive a live input is activated, but no live stream is received, we will try to reconnect to the defined stream every few seconds. How often this happens depends on the used streaming format (NDI, SRT or UDP) - and using SRT, if our engine is the Caller (0,5sec) or the Listener (3sec).

  • Using NDI, the “Live Input” stream can be changed in the Settings tab of the Multi Viewer while the channel is on air. Using SRT or UDP, the Inputstream has to be defined in the engine settings and therefore can not be changed while the channel is running.

  • Using NDI, we insert metadata like we would do it using SDI. This is, because there is no standard available which describes the “correct” method.

  • SRT and UDP streams support the SMPTE 2038 specifications related to the transport of VANC data (e.g. CEA-708, OP-47, SCTE-104) for both the output and the live input.

  • SRT and UDP streams support ATSC A/53 closed captions in the MPEG transport stream for both the output and the live input. When using a live input, the ATSC A/53 closed captions are disabled if the stream contains SMPTE 2038 information.

  • SRT and UDP streams support SCTE-35 events in the MPEG transport stream for both the output and the live input. When using a live input, SCTE-35 is disabled if the stream contains SMPTE 2038 information. Any SCTE-104 events scheduled using the “Event” option will be automatically converted to SCTE-35.

  • Adjustable encoding parameters. The H.264 profile/bitrate as well as the AAC audio bitrate can be defined when using SRT or UDP streaming out.

    Screenshot 2024-06-04 at 16.21.16.png

  • Supported “live” audio formats. Incoming SRT and UDP streams with MP2 (MPEG-1 Layer II) audio tracks in the MPEG transport stream are supported in addition to AAC encoded audio.

Limitations

  • The incoming “Live signal” MUST match the Output Format defined for the Playout channel.

  • Only the “Buffered In” method to switch to live and 8bit modes are available using one of the supported streaming methods.

  • The output stream is always progressive, but we do not de-interlace movies with two fields at the moment. So please use movies which are progressive for the highest quality.

  • It is possible that there are no “Skipped Frames” shown in the Just Out Diagnostic window, even there are skipped frames in the final stream.

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