[foms] WebVTT implementation in browsers

Jeroen Wijering jeroen at jwplayer.com
Tue Apr 10 14:24:55 UTC 2018

Hey Silvia,

John is compiling thoughts from the team at JW Player. Overall, we're big
fans of VTT and are using it for applications like preview thumbnails and
advertising breaks.

Just ran across this report from Encoding.com that stated a jump in VTT
captions market share (see page 11).

- Jeroen

On Sat, Apr 7, 2018 at 5:03 AM, Silvia Pfeiffer <silviapfeiffer1 at gmail.com>

> Hi everyone,
> I am collecting opinions about the need for better support of WebVTT
> in browsers. Please speak up for or against it.
> This is on the background of getting WebVTT to become a W3C
> recommendation, which is what we are working on in the Timed Text
> Working Group (TTWG) right now.
> In my experience, having a spec at recommendation status is a key
> motivator to get browsers to implement features interoperably. Basic
> support is in all browsers, but interoperability is so poor that it's
> basically unusable for normal Web publishing.
> I'd like to hear from browsers if a stable published specification of
> WebVTT would encourage them to implement support.
> I'd like to hear from video player developers if they would drop their
> polyfills if browsers supported WebVTT in its completeness. (Browsers
> want to know this also.)
> And I'd like to hear from video publishers if native WebVTT support
> would encourage them to publish more captions.
> If you have any opinion, please reply for yourself and/or your
> company. I'm collecting feedback for the TTWG mailing list.
> Cheers,
> Silvia.
> P.S. The WebVTT version in preparation for the standards track can be
> inspected at https://htmlpreview.github.io/?https://github.com/w3c/
> webvtt/blob/gh-pages/archives/2018-04-15/Overview.html
> (some links won't work because it's rendered through htmlpreview).
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> foms at xiph.org
> http://lists.xiph.org/mailman/listinfo/foms
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