HTML video tag onTimeUpdate firing interval

The callback attached to the onTimeUpdate property of the HTML video tag fires, at its slowest, once every 250ms.

In my tests, when I just let the video play normally, the onTimeUpdate callback was called about 4 times per second.

Here is the relevant part of the HTML5 spec document.

References

• https://html.spec.whatwg.org/#event-media-timeupdate
• https://stackoverflow.com/a/12325960/8403199

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