How to use Captionator when browser supports track element (natively but badly)?

[callumlocke]

Chrome supports <track> elements natively. But not completely, eg, things like L:5% don't work.

Using Captionator, my WebVTT positioning options work correctly in Firefox.

Is there some way to make Captionator work on Chrome too – ie, to prevent Chrome from natively displaying the captions, and let the polyfill do it instead?

[revolunet]

did you try with forceCaptionify: true option ?

[shaunmw]

how does one set this option?

[frankcortes]

In my own case, I'm trying to execute captionator with forceCaptionify: true. When this line is executed, returns the next Error: msg: TypeError: Attempted to assign to readonly property.