# No Closed Captions on \*.f4m live stream, but Closed Captions present on \*.m3u8

**URL:** <https://community.wowza.com/t/no-closed-captions-on-f4m-live-stream-but-closed-captions-present-on-m3u8/45770>\
**Category:** Wowza Streaming Engine\
**Created:** [September 14, 2015, 5:23pm UTC](https://community.wowza.com/t/no-closed-captions-on-f4m-live-stream-but-closed-captions-present-on-m3u8/45770 "2015-09-14T17:23:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![NAthan\_Cavanagh1](https://avatars.discourse-cdn.com/v4/letter/n/9de053/32.png) [@NAthan\_Cavanagh1](https://community.wowza.com/u/NAthan_Cavanagh1)\
**Post date:** [September 14, 2015, 5:23pm UTC](https://community.wowza.com/t/no-closed-captions-on-f4m-live-stream-but-closed-captions-present-on-m3u8/45770/1 "2015-09-14T17:23:30Z")

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I am using a Teradeck Slice to encode a live feed (via SDI input) and send an RTMP stream to my wowza setup running on AWS. I have an standard application setup to receive the RTMP stream and am generating multi-bitrate HDS and HLS streams. I am able to view both the HDS and HLS live streams in the test players that come with wowza 4.2 install, and I am able to see Closed Captions in the Apple HLS test player, but the Adobe HDS player does not show a captions display option. I am able to view the .m3u8 live stream in quicktime with captions, in VLC with captions, and on iOS devices all with Closed Captions. But when I try to play the .f4m live stream in my flowplayer (which is setup to display closed captions and does with other streams) I do not see any closed captions.

According to teradek’s website: [https://support.teradek.com/entries/90394736-Closed-Caption-CC-support](https://support.teradek.com/entries/90394736-Closed-Caption-CC-support) "CC type supported: EIA-608 and EIA-708

Insertion method: inserting into H.264 SEI, as per SCTE 128-1"

Is Wowza capable of working with captions inserted into an RTMP stream using this method? Why am I am to see captions int the .m3u8 but not the .f4m stream?

I feel like I am missing something simple here but have been over the information found here: [https://www.wowza.com/docs/how-to-configure-closed-captioning-for-live-streaming](https://www.wowza.com/docs/how-to-configure-closed-captioning-for-live-streaming) but still have not been able to get captions to appear in the .f4m stream.

Any insight/direction.assistance into this would be greatly appreciated. Thank you.

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**Author:** ![Daren\_Johnson](https://avatars.discourse-cdn.com/v4/letter/d/ee59a6/32.png) [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)\
**Post date:** [September 14, 2015, 11:37pm UTC](https://community.wowza.com/t/no-closed-captions-on-f4m-live-stream-but-closed-captions-present-on-m3u8/45770/2 "2015-09-14T23:37:14Z")

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Hi,

Wowza Streaming Engine can take the live captions provide in EIA-608 form and convert those to onTextData. onTextData captions will play in supporting RTMP and HDS players.

The Wowza test players themselves do not support these captions.

You will need a player, such as FlowPlayer, in order to [show the captions with HDS playback.](https://www.wowza.com/docs/how-to-configure-closed-captioning-for-live-streaming#flow)

Daren

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**Author:** ![NAthan\_Cavanagh1](https://avatars.discourse-cdn.com/v4/letter/n/9de053/32.png) [@NAthan\_Cavanagh1](https://community.wowza.com/u/NAthan_Cavanagh1)\
**Post date:** [September 15, 2015, 7:10am UTC](https://community.wowza.com/t/no-closed-captions-on-f4m-live-stream-but-closed-captions-present-on-m3u8/45770/3 "2015-09-15T07:10:25Z")

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Daren\_j,

Thank you for your reply; I was able to figure out what I was missing.

Unfortunately I was never good at recognizing when to step away from a problem and come back with fresh look. So after 7 hours of banging my head against this issue I drop the post above in hopes someone might have had similar issues, or may even be able to point out what I was missing.

Then this morning I took one more look at [https://www.wowza.com/docs/how-to-configure-closed-captioning-for-live-streaming](https://www.wowza.com/docs/how-to-configure-closed-captioning-for-live-streaming) and saw that I need to add the com.wowza.wms.timedtext.live.module.ModuleCEA608ToOnTextData module to the application.

Simple as that. I have no idea how or why I missed that the first dozen or so times I looked at that page, but there it was. I added the module, restarted the application and Closed Captions appears like magic in both the .f4m and .m3u8 versions of the live stream.

Thank you,

-n8
