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

From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
Date: Fri, 15 Jun 2018 13:14:38 +0000
To: public-web-and-tv@w3.org
Message-ID: <issue_comment.created-397616183-1529068477-sysbot+gh@w3.org>
> you could still observe the value for the exact moments when frames change and act on that 

@Daiz It is more important to align with _audio_ primarily, and video frames secondarily. Otherwise you end up with the quantisation problem where you only update subtitles on frame boundaries, and the system breaks down at low frame rates. Whatever design we end up with can't require alignment with encoded video frames in all cases for that reason. Note that playback systems sometimes generate false frames after decoding, which generates a new set of frame boundaries!

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Received on Friday, 15 June 2018 13:14:42 UTC

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