Displaying Closed Captions

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ota
Posts: 28
Joined: Fri Jul 05, 2019 6:47 am

Displaying Closed Captions

Post by ota » Fri Jan 24, 2020 12:28 pm

I have MS's github sample for Windows Universal VideoPlayback working to display OTA TV from a Quatro. I'm now trying to get closed captioning working. When using the sample's mkv video file as a source with the "in band" example, the player does display captions. However, when using the Quatro's stream as the source I'm not seeing the loading of captions being triggered. Are captions embedded in the stream or by chance need to be loaded from a separate resource?

rpcameron
Posts: 902
Joined: Fri Mar 25, 2016 9:55 am

Re: Displaying Closed Captions

Post by rpcameron » Fri Jan 24, 2020 12:56 pm

In the US OTA closed captions are embedded in the video stream itself. The standard is called CEA-608/708. Not all video decoding and subtitle libraries support embedded closed captions; you may want to check your video player to ensure captions embedded in the video stream are supported.

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