5. Live Signal Handling (v3.0)
Besides playing Videos and Graphics, our playout solutions also allow you to manage live incoming signals like studio signals or satellite feeds and send it to the output.
This can be done by…
…using the more traditional way by controlling a mixer/router.
…configuring the Playout Video device to do so.
Using the Playout Video device there are two different ways:
The Downstream Keyer based method (DSK In-based)
The non Downstream Keyer based method (Buffered In-based)
Both methods can be used in SD, HD and UHD, but depend on the specific hardware used for playout.
DSK-based
Using the DSK-based method the Live Signal is passed through using the AJA device and there is no delay added to the Live Signal.
Works with all supported AJA devices.
Does not work with devices from Blackmagic.
Live Signal is not sent to the Just Out engine.
Live Signal can not be seen in the On Air view of the Just Control user interface.
Live Signal can not be part of a realtime Graphics template - scaling as part of the template for example.
Closed Captioning data which comes with the Live Signal can be passed through to the output.
Using the playout video device to switch to the live signal means, that the video card synchronises to the incoming video and not to the reference signal. In order to stabilize the signal in advance (i.e. before it is sent to the video card input) you must use a frame synchronizer. Suited frame synchronizers can be found on the AJA Website or you can also use a BMD ATEM switcher.
Non DSK-based
Using the non DSK-based (or Buffered-In) method, the Live Signal is sent to the Just Out engine which buffers the incoming signal. A minimum of 12 frames of delay is added to the Live Signal, depending on the buffer defined for Just Out. This means that the signal which has been received 12 frames ago is visible at the output. The delay finally 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 10 seconds (Video buffer = 10 Seconds).
Works with the IO4K(plus) and the Kona 4 (5) from AJA.
Works with all devices from Blackmagic which have "4K" in their name.
Live Signal is sent to the Just Out engine.
Live Signal can be seen in the On Air view of the Just Control user interface.
Live Signal can be part of a realtime Graphics template.
Closed Captioning data which comes with the Live Signal can be passed through to the output.
