onTextData captions in SMIL file with DVR

Brent_Walters
Wed, 18 May 2022 20:31:48 +0000
Wowza Streaming Engine

Greetings all –

I am running into a problem with closed captions in combination with the nDVR and Transcoder options for a live stream to our Roku channel.

I am currently using a SMIL file to send the adaptive bitrate streams to the Roku player.
In order to get the caption data to show up on the Roku player I have to enable the cupertinoLiveCaptionsUseWebVTT option and add a textstream entry to the SMIL file.

I am working to update our Roku channel to use the DVR options but I cannot use the SMIL file with the text stream entry in combination with the ?DVR tag. it does not work. Also I cannot get webVTT captions to show up on the transcoded name group, but captions work there with the ?DVR tag.

My captions encoder is currently supplying the injected captions with a module they built.
I can also pull in live 608 captions as well. I have either option available.

My end goal is to have our channel with adaptive bitrate DVR playback with captions.

Any thoughts would be highly appreciated.

Thanks.

2 posts - 2 participants