# WebVTT live captioning in LL-HLS streams

**URL:** <https://community.wowza.com/t/webvtt-live-captioning-in-ll-hls-streams/54750>\
**Category:** Wowza Streaming Engine\
**Tags:** low-latency\
**Created:** [March 3, 2020, 5:53pm UTC](https://community.wowza.com/t/webvtt-live-captioning-in-ll-hls-streams/54750 "2020-03-03T17:53:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tyll\_Winkler](https://avatars.discourse-cdn.com/v4/letter/t/f1d935/32.png) [@Tyll\_Winkler](https://community.wowza.com/u/Tyll_Winkler)\
**Post date:** [March 3, 2020, 5:53pm UTC](https://community.wowza.com/t/webvtt-live-captioning-in-ll-hls-streams/54750/1 "2020-03-03T17:53:09Z")

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Hi,

I’ve just updated to 4.8.0 and setup our installation to enable LL-HLS.

The video streaming runs with no problems, I can run the cupertino and CMAF packetizers in parallel, and our caption injection via the cupertino packetizer also still works; my question is whether it is currently possible to configure the CMAF packetizer to inject WebVTT captions into the LL-HLS stream? Unfortunately I was not able to find any information on this in the docs, but maybe I am just blind ^^

If this is not currently possible, are there any plans for this to become available?

Thanks in advance!

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [March 3, 2020, 8:13pm UTC](https://community.wowza.com/t/webvtt-live-captioning-in-ll-hls-streams/54750/2 "2020-03-03T20:13:58Z")

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I don’t think this is possible just yet with LL-HLS since it is still beta but, I’m checking to see if our engineers know more about any future plans.

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**Author:** ![Tyll\_Winkler](https://avatars.discourse-cdn.com/v4/letter/t/f1d935/32.png) [@Tyll\_Winkler](https://community.wowza.com/u/Tyll_Winkler)\
**Post date:** [February 16, 2021, 10:53am UTC](https://community.wowza.com/t/webvtt-live-captioning-in-ll-hls-streams/54750/3 "2021-02-16T10:53:05Z")

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Hi,  
since this still doesn’t appear to be working almost a year later, I wanted to ask if there are any plans w/ regards to implementing this or if there’s any news in general about this topic.

Thanks!