Just Play Pro & Just Live Pro · 2026 documentation

2.11 SDI based OP-47 output (v.2026.x)

Please consider these points while configuring a Playout of OP-47 subtitles.

Please consider these points while configuring a Playout of OP-47 subtitles.

  • We support devices from AJA (except KONA LHi and KONA LHe Plus) and Blackmagic Design for OP-47 playout.

  • AJA supports only a single output to carry OP-47 data. Which output this is depends on the video device and the switch to live method used for the channel.

  • The output of OP-47 data is currently not supported for channels set up to play out fill and key using a device from Blackmagic Design.

  • To be able to pass through OP-47 data embedded into the Live Signal, an AJA Io 4K Plus, Io X3, KONA 4 or KONA 5 is needed or a "4K" device from Blackmagic Design.

  • We support OP-47 teletext subtitles embedded in an MXF data track.

  • We support OP-47 Teletext subtitles in an EBU-STL or SRT sidecar file (Blackmagic Design devices ONLY)

  • We have been testing OP-47 support ONLY using PAL 1920×1080 HD channels.

  • AJA currently does not support OP-47 sidecar files. Please consider using a device from Blackmagic Design for the time being.

The configuration for of EBU-STL and SRT sidecars playout can be found in the “Advanced” tab of a Channel’s settings within Just Control.