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Please consider these points while configuring a Playout of Closed Captions.

  • We support devices from AJA and BMD for CC playout.
  • AJA supports only a single output to carry the CC data. Using a device from BMD, all outputs available also carry the CC data.
  • To be able to pass through CC data embedded into the Live Signal, an AJA Io4K+, Kona 4 or Kona 5 is needed or a "4K" device from BMD.
  • CC of the Live Signal may be on lines 9 through 20. The incoming signal is automatically scanned for caption data.
  • Playing out QuickTime MOV Videos, line-21 burn-in, the CC data track are supported for Closed Captions.
  • When playing out NTSC HD with Closed Captions enabled, Just Out always sends CEA-708 CC packets. For media with CEA-608 CC packets these will be wrapped into CEA-708 CC packets.
  • When playing out NTSC SD with Closed Captions enabled, Just Out always sends CEA-608 CC packets. For media with CEA-708 CC packets these will be wrapped into CEA-608 CC packets whenever possible.
  • Using the Jump to Next function can take some seconds before the captions will be cleared on screen.


  • The output of Closed Captions of an UHD/4K channel is not supported at the moment.
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