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Enabling Closed Captioning Ingestion

Livestream Studio can ingest FCC compliant closed captioning data with their input sources and stream it out to Livestream.

Livestream Studio supports ingesting CEA 708 closed captions via Blackmagic DeckLink devices. Most closed captioning encoders support this type of captions, as they are FCC compliant. Studio can then deliver CEA 608 captions to the Livestream player or the Vimeo player. If you are using another streaming provider, contact them regarding their player's closed captioning support. 

Important: The captions must be embedded into a Blackmagic Design SDI input in order to be recognized. Closed captioning currently does not work when using Magewell capture cards, including the cards installed on the Studio One.

To enable closed captions forwarding to Livestream, go to settings and enter the Streaming menu. At the bottom, you will see Closed Captions. Check Closed Captions Enabled to allow for closed captioning data to be received.

Next, select whether the closed captions are available only with the source they are coming from (Follow on switching), if the captions should show regardless of what source is in Program (From single camera), or only when the source is in AUX program (From AUX).

Save your settings, then go to the Inputs tab. Select the camera source(s) that has the closed captioning data embedded, then click the corresponding gearwheel to the right to configure its settings.


On the left side, select Closed Captions.

Check Enabled, and then select which channel your closed captions are coming through. This will require that the selected input source be a 10-bit input signal, rather than 8-bit.

When you go live, your captions will be available as an option in the destination's player as well as your Livestream VOD. Please note you will not see any captions in Livestream Studio or when you download the video file from your event page.

We cannot guarantee that captions will be available on Android due to the diverse nature of its versioning and devices.

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