5. Live Signal Handling (v2.0)

Owned by Thomas Staiger
Last updated: Jul 29, 2016 by Georg Deisting

Besides playing videos and graphics, just:live/just:play also allows you to manage live incoming signals like studio signals or satellite feeds and send it to the output. This can be done:

  • using the more traditional way by controlling a mixer/router or
  • by configuring the play out video device to do so.

 

Using the video hardware, there are 2 different ways to do so, the DS Keyer and the non DSK method. Both methods can be used in SD and HD but not in UHD. The following shows the differences between the two methods.

  • Works with all supported AJA devices
  • Does not work with devices from BMD
  • Live signal is NOT sent to our engine
  • Live signal can NOT be seen in the "On Air" window of the UI
  • Live signal can NOT be part of a real-time graphics template
  • Live signal can NOT be part of the integrated RTMP streaming engine
  • CC data which comes with the live signal can not be passed through to the output

 

Because the live signal is passed through using the AJA device, there is NO delay added to the live signal.

 

 

  • Works with the IO4K and the Kona 4 from AJA
  • Works with all devices from Black Magic Design which have "4K" in their name
  • Live signal is sent to our engine
  • Live signal can be seen in the "On Air" window of the UI
  • Live signal can be part of a real-time graphics template
  • Live signal can be part of the integrated RTMP streaming engine
  • CC data which comes with the live signal can be passed through to the output

 

Because the live signal is sent to our engine which buffers the incoming signal, a minimum of 12 frames delay is added to the live signal. This means that the signal which has been received minimum 12 frames ago is visible at the output. The buffer depends on the video buffer defined for the just:out engine under the Layers & Engines tab of just:connect and can be between 12 frames (Video buffer OFF) and a bit more than 3 seconds (Video buffer 3 Seconds).

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