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Re: [media-and-entertainment] Frame accurate seeking of HTML5 MediaElement

From: Ingar Arntzen via GitHub <sysbot+gh@w3.org>
Date: Fri, 15 Jun 2018 12:41:51 +0000
To: public-web-and-tv@w3.org
Message-ID: <issue_comment.created-397608365-1529066510-sysbot+gh@w3.org>
@Snarkdoof - as you indicate, if *timeUpdate* events were timestamped by the media player (using a common clock -  say performance.now), then it would become much easier to maintain a precise, interpolated media clock in JS. Importantly, the precision of such an interpolated clock would not be highly sensitive to the frequency of the *timeUpdate* event (so we could avoid turning that up unnecessarily). 

In addition, a precise interpolated media clock is a good basis for using timeouts to fire *enter/exit* events for subtitles etc. If one would prefer enter/exit events to be generated natively within the media element, using timeouts instead of poll-based *time-marches-on* should be an attractive solution there as well.

So, adding timestamps to media events seems to me like a simple yet important step forward.
Similarly, there should be timestamps associated with control events such as play, pause, seekTo, ...

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Received on Friday, 15 June 2018 12:41:54 UTC

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