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Question by shradha sahasrabudhe · Sep 17, 2012 at 07:26 AM · media players and devices

Embedded closed captions in rtmp live stream

Do you have a sample for reading the embedded closed captioning either 608/708 within the rtmp live stream that passes through wowza?

sample with the player is appreciated.
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Answer by Lisa Wong · Sep 17, 2012 at 08:07 AM

I will contact you off-line.

-Lisa
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avatar image shradha sahasrabudhe · Sep 17, 2012 at 09:16 AM 0
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Shall you be emailing me?
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Answer by Richard Lanham · Sep 17, 2012 at 06:23 PM

Yes, we'll contact you directly.

Richard
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avatar image Matt Youngblut · Sep 26, 2012 at 03:37 PM 0
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Could you also please contact me regarding captioning?
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Answer by Richard Lanham · Sep 26, 2012 at 09:51 PM

Write to support@wowza.com and ask

Richard
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avatar image Mike Kralec · Feb 27, 2013 at 04:16 PM 0
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Write to support@wowza.com and ask

Richard


Just wondered if there was any more general information available for this? If I send the stream to wowza with embedded captions over UDP (MPEG-TS), then I can open VLC

and playback over RTSP from Wowza and find the captions. If I try to read them after sending to RTMP, I have yet to find a player that will find the captions. Are they still there and it's just

a lack of player support? In that case can you point me to an RTMP player that will find those captions? Is there something else going on?

Thanks,

Mike
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Answer by Richard Lanham · Feb 27, 2013 at 09:31 PM

Mike,

Are the embedded captions CEA-608/CEA-708? Wowza can not convert from CEA-608/CEA-708 at present, only to. It is a future feature, but I don't have a time frame or know exactly what will be supported.

Richard
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avatar image Mike Kralec · Feb 27, 2013 at 05:25 PM 0
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Mike,

Are the embedded captions CEA-608/CEA-708? Wowza can not convert from CEA-608/CEA-708 at present, only to. It is a future feature, but I don't have a time frame or know exactly what will be supported.

Richard


They are CEA-708 captions embedded. So, the only question is whether you'll have that feature by the time the FCC closed caption rules apply. I know you can't answer that, but anything you can do to get there is appreciated.

Thanks,

Mike
avatar image Richard Lanham · Feb 27, 2013 at 09:57 PM 0
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If there is CEA-608 data in the incoming live stream Wowza passes that through to iOS clients. So it should work in that case

Richard
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Answer by Richard Lanham · Feb 27, 2013 at 10:55 PM

I will let you know.

Richard
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avatar image Lisa Wong · Feb 28, 2013 at 09:26 AM 0
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Mike,

I do not have an exact timeline, but will follow up with you directly about a CEA-608 preview program that we are planning.

-Lisa

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